Paysages Mathématiques<p>Theorem of the Day (April 9, 2025) : Fisher’s Inequality<br />Source : Theorem of the Day / Robin Whitty<br />pdf : <a href="https://www.theoremoftheday.org/Statistics/Fisher/TotDFisher.pdf" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://www.</span><span class="ellipsis">theoremoftheday.org/Statistics</span><span class="invisible">/Fisher/TotDFisher.pdf</span></a><br />notes : <a href="https://www.theoremoftheday.org/Resources/TheoremNotes.htm#228" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://www.</span><span class="ellipsis">theoremoftheday.org/Resources/</span><span class="invisible">TheoremNotes.htm#228</span></a> </p><p><a href="https://mathstodon.xyz/tags/mathematics" class="mention hashtag" rel="tag">#<span>mathematics</span></a> <a href="https://mathstodon.xyz/tags/maths" class="mention hashtag" rel="tag">#<span>maths</span></a> <a href="https://mathstodon.xyz/tags/math" class="mention hashtag" rel="tag">#<span>math</span></a> <a href="https://mathstodon.xyz/tags/theorem" class="mention hashtag" rel="tag">#<span>theorem</span></a> <span class="h-card" translate="no"><a href="https://mathstodon.xyz/@Theoremoftheday" class="u-url mention">@<span>Theoremoftheday</span></a></span></p>
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78 posts · 54 participants · 6 posts today
Pustam | पुस्तम | পুস্তম🇳🇵<p>One of the best things I saw this week: a paper uncovering alien signals in the Riemann Zeta function. April Fools always brings peak creativity. 😅</p><p><a href="https://mathstodon.xyz/tags/Riemann" class="mention hashtag" rel="tag">#<span>Riemann</span></a> <a href="https://mathstodon.xyz/tags/Zeta" class="mention hashtag" rel="tag">#<span>Zeta</span></a> <a href="https://mathstodon.xyz/tags/ZetaFunction" class="mention hashtag" rel="tag">#<span>ZetaFunction</span></a> <a href="https://mathstodon.xyz/tags/RiemanZetaFunction" class="mention hashtag" rel="tag">#<span>RiemanZetaFunction</span></a> <a href="https://mathstodon.xyz/tags/AprilFool" class="mention hashtag" rel="tag">#<span>AprilFool</span></a> <a href="https://mathstodon.xyz/tags/AprilFools" class="mention hashtag" rel="tag">#<span>AprilFools</span></a> <a href="https://mathstodon.xyz/tags/AprilFoolsDay" class="mention hashtag" rel="tag">#<span>AprilFoolsDay</span></a> <a href="https://mathstodon.xyz/tags/Creativity" class="mention hashtag" rel="tag">#<span>Creativity</span></a> <a href="https://mathstodon.xyz/tags/Math" class="mention hashtag" rel="tag">#<span>Math</span></a> <a href="https://mathstodon.xyz/tags/Maths" class="mention hashtag" rel="tag">#<span>Maths</span></a> <a href="https://mathstodon.xyz/tags/NumberTheory" class="mention hashtag" rel="tag">#<span>NumberTheory</span></a> <a href="https://mathstodon.xyz/tags/PeakCreativity" class="mention hashtag" rel="tag">#<span>PeakCreativity</span></a> <a href="https://mathstodon.xyz/tags/Nerd" class="mention hashtag" rel="tag">#<span>Nerd</span></a> <a href="https://mathstodon.xyz/tags/Nerds" class="mention hashtag" rel="tag">#<span>Nerds</span></a> <a href="https://mathstodon.xyz/tags/Humor" class="mention hashtag" rel="tag">#<span>Humor</span></a> <a href="https://mathstodon.xyz/tags/Humour" class="mention hashtag" rel="tag">#<span>Humour</span></a> <a href="https://mathstodon.xyz/tags/Alien" class="mention hashtag" rel="tag">#<span>Alien</span></a> <a href="https://mathstodon.xyz/tags/AlienSignals" class="mention hashtag" rel="tag">#<span>AlienSignals</span></a></p>
Alastair Temple<p>Question for the mathematicians and scientists out there. Anyone able to help me in working out what they have actually done here to calculate the "Mean Wind"? The data they used was obtained from the ERA5 dataset so comes in hourly values for U (east-west) and V (north-south) component. </p><p><a href="https://mastodon.art/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://mastodon.art/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maths</span></a> <a href="https://mastodon.art/tags/help" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>help</span></a> <a href="https://mastodon.art/tags/statistics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>statistics</span></a></p>
Level 98 🇺🇦<p><a href="https://mastodon.social/tags/Math" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Math</span></a> <a href="https://mastodon.social/tags/Maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Maths</span></a> <a href="https://mastodon.social/tags/Mathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mathematics</span></a> I get maths students coming to me in their last year of high school not having learnt the main reason we use radians rather than degrees </p><p>Essentially, calculus.</p><p>E.g. the derivative of a trig function where the variable is in radians, is simpler/cleaner than in degrees, for example:</p><p>If x is in radians then<br>d/dx (sin x) = cos x</p><p>In degrees:<br>d/dx (sin x) = (pi/180) cos x</p><p>The extra factor of (pi/180) makes things messy.</p>
Paysages Mathématiques<p>9 avril 1869 : <a href="https://mathstodon.xyz/tags/CeJourL%C3%A0" class="mention hashtag" rel="tag">#<span>CeJourLà</span></a> naissance de Élie Cartan (†6/5/1951), mathématicien français dont les travaux portent notamment sur les groupes et algèbres de Lie, la géom. différentielle, les équat. aux dérivées partielles. Il a introduit la notion de spineur.<br /><a href="https://fr.wikipedia.org/wiki/%C3%89lie_Cartan" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">fr.wikipedia.org/wiki/%C3%89li</span><span class="invisible">e_Cartan</span></a><br /><a href="https://mathstodon.xyz/tags/math%C3%A9matiques" class="mention hashtag" rel="tag">#<span>mathématiques</span></a> <a href="https://mathstodon.xyz/tags/maths" class="mention hashtag" rel="tag">#<span>maths</span></a> <a href="https://mathstodon.xyz/tags/math" class="mention hashtag" rel="tag">#<span>math</span></a></p>
AnneTheWriter<p>Bonus <a href="https://universeodon.com/tags/Joke" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Joke</span></a> 1:<br>I saw my math teacher with a piece of graph paper yesterday. I think he must be plotting something.</p><p>Bonus <a href="https://universeodon.com/tags/Joke" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Joke</span></a> 2:<br>Did you hear about the over-educated circle? <br>It had 360°!</p><p>(It's <a href="https://universeodon.com/tags/HootinTootinTuesday" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HootinTootinTuesday</span></a> again! Post some jokes or funny memes under this hashtag today, and bring lots of smiles to <a href="https://universeodon.com/tags/Mastodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mastodon</span></a>.)</p><p><a href="https://universeodon.com/tags/Humor" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Humor</span></a> <a href="https://universeodon.com/tags/Humour" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Humour</span></a> <a href="https://universeodon.com/tags/FunnyMeme" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FunnyMeme</span></a> <a href="https://universeodon.com/tags/Math" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Math</span></a> <a href="https://universeodon.com/tags/Maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Maths</span></a> <a href="https://universeodon.com/tags/MathJokes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MathJokes</span></a> <a href="https://universeodon.com/tags/MathJoke" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MathJoke</span></a> <a href="https://universeodon.com/tags/Cards" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cards</span></a> <a href="https://universeodon.com/tags/CardGames" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CardGames</span></a> <a href="https://universeodon.com/tags/FlashCards" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FlashCards</span></a> <a href="https://universeodon.com/tags/DadJoke" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DadJoke</span></a> <a href="https://universeodon.com/tags/Puns" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Puns</span></a></p>
Tariq<p>Years ago I recall the question of whether complex numbers vs real numbers gave <a href="https://mastodon.social/tags/neuralnetworks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>neuralnetworks</span></a> a greater ability to learn ?</p><p>I don't recall the answer</p><p>does anyone know?</p><p><a href="https://mastodon.social/tags/machinelearning" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>machinelearning</span></a> <a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maths</span></a></p>
Rod2ik 🇪🇺 🇨🇵 🇪🇸 🇺🇦 🇨🇦 🇩🇰 🇬🇱<p>« 380 ans de mystère enfin résolu » : des <a href="https://mastodon.social/tags/math%C3%A9maticiens" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mathématiciens</span></a> ( <a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maths</span></a> ) percent le secret ultime du <a href="https://mastodon.social/tags/th%C3%A9or%C3%A8me" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>théorème</span></a> des <a href="https://mastodon.social/tags/cercles" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cercles</span></a> de <a href="https://mastodon.social/tags/Descartes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Descartes</span></a> avec une <a href="https://mastodon.social/tags/d%C3%A9monstration" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>démonstration</span></a> fulgurante</p><p><a href="https://www.innovant.fr/2025/04/08/380-ans-de-mystere-enfin-resolu-des-mathematiciens-percent-le-secret-ultime-du-theoreme-des-cercles-de-descartes-avec-une-demonstration-fulgurante/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">innovant.fr/2025/04/08/380-ans</span><span class="invisible">-de-mystere-enfin-resolu-des-mathematiciens-percent-le-secret-ultime-du-theoreme-des-cercles-de-descartes-avec-une-demonstration-fulgurante/</span></a></p>
Rod2ik 🇪🇺 🇨🇵 🇪🇸 🇺🇦 🇨🇦 🇩🇰 🇬🇱<p>« 380 ans de mystère enfin résolu » : des <a class="hashtag" href="https://bsky.app/search?q=%23math%C3%A9maticiens" rel="nofollow noopener noreferrer" target="_blank">#mathématiciens</a> ( <a class="hashtag" href="https://bsky.app/search?q=%23maths" rel="nofollow noopener noreferrer" target="_blank">#maths</a> ) percent le secret ultime du <a class="hashtag" href="https://bsky.app/search?q=%23th%C3%A9or%C3%A8me" rel="nofollow noopener noreferrer" target="_blank">#théorème</a> des <a class="hashtag" href="https://bsky.app/search?q=%23cercles" rel="nofollow noopener noreferrer" target="_blank">#cercles</a> de <a class="hashtag" href="https://bsky.app/search?q=%23Descartes" rel="nofollow noopener noreferrer" target="_blank">#Descartes</a> avec une <a class="hashtag" href="https://bsky.app/search?q=%23d%C3%A9monstration" rel="nofollow noopener noreferrer" target="_blank">#démonstration</a> fulgurante
<a href="https://www.innovant.fr/2025/04/08/380-ans-de-mystere-enfin-resolu-des-mathematiciens-percent-le-secret-ultime-du-theoreme-des-cercles-de-descartes-avec-une-demonstration-fulgurante/" rel="nofollow noopener noreferrer" target="_blank">www.innovant.fr/2025/04/08/3...</a><br><br><a href="https://www.innovant.fr/2025/04/08/380-ans-de-mystere-enfin-resolu-des-mathematiciens-percent-le-secret-ultime-du-theoreme-des-cercles-de-descartes-avec-une-demonstration-fulgurante/" rel="nofollow noopener noreferrer" target="_blank">« 380 ans de mystère enfin rés...</a></p>
ƧƿѦςɛ♏ѦਹѤʞ<p><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@JacquesTimmermans" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>JacquesTimmermans</span></a></span> <br>...Suddenly three became an infinity. Maths is often like this and I think it’s generally a hint that one is moving in the right direction.<br><a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mathematics</span></a></p>
ƧƿѦςɛ♏ѦਹѤʞ<p><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@JacquesTimmermans" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>JacquesTimmermans</span></a></span> <br>I recall learning about the quaternions surprisingly early in life and becoming somewhat obsessed with them and other related algebras I managed to discover along the way all of which seemed to provide sensible finite numbers of solutions to various problems; then suddenly realising one day, some years later, that Hamilton had not only found three square roots of minus one but that *every point* on the unit imaginary sphere is a square root of minus one...<br><a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mathematics</span></a></p>
Alex<p>Discussing <a href="https://mastodon.org.uk/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maths</span></a> homework with my eldest I asked if they where aware of the current tariff news. After I explained the missing details from their cursory awareness their first question was: "did <a href="https://mastodon.org.uk/tags/Trump" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Trump</span></a> finish primary school maths?"</p>
barefootstache<p>This uses <a href="https://qoto.org/tags/TurfJs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TurfJs</span></a> polygon length function to calculate its circumference. The underlying sorting of the coordinates uses polar coordinates, since that is how they are being randomly generated. By first sorting over the degrees and the distances.</p><p>For most instances this is a pretty good estimate, though in some case a self-intersecting polygon can be created, which hints that there is a more optimized polygon.</p><p>Further this problem is a typical 'travelling salesman problem' which can be solved via various algorithms.</p><p>Though before considering such optimization issues, there is the main question if the randomly generated POI is even accessible to the public. </p><p>In the case one is a pedestrian, one could use <a href="https://qoto.org/tags/overpass" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>overpass</span></a> to gather information if any <a href="https://qoto.org/tags/OpenStreetMap" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OpenStreetMap</span></a> highways exist in the proximity to the POI and then find the one that is the closest and permissive to pedestrians. Then move the POI to that location.</p><p>This example only works if there is enough <a href="https://qoto.org/tags/OSM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OSM</span></a> data at the location.</p><p><a href="https://qoto.org/tags/mathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mathematics</span></a> <a href="https://qoto.org/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maths</span></a></p>
Paysages Mathématiques<p>"How do we know that a particular set of postulates, say those of elementary algebra, will never lead to a contradiction? The answer to this disposes once and for all of the hoary myth of absolute truth for the conclusions of pure mathematics. We do not know [...] that a particular set of postulates is self-consistent and that it will never lead to a contradiction." – Eric Temple Bell (1883-1960)<br /><a href="https://mathstodon.xyz/tags/quote" class="mention hashtag" rel="tag">#<span>quote</span></a> <a href="https://mathstodon.xyz/tags/mathematics" class="mention hashtag" rel="tag">#<span>mathematics</span></a> <a href="https://mathstodon.xyz/tags/math" class="mention hashtag" rel="tag">#<span>math</span></a> <a href="https://mathstodon.xyz/tags/maths" class="mention hashtag" rel="tag">#<span>maths</span></a></p>
Paysages Mathématiques<p>"Comment savons-nous qu'un ensemble particulier de postulats, disons ceux de l'algèbre élémentaire, ne conduira jamais à une contradiction ? La réponse à cette question élimine une fois pour toutes le vieux mythe de la vérité absolue des conclusions des mathématiques pures. Nous ne savons pas [...] si un ensemble particulier de postulats est cohérent, et s'il ne conduira jamais à une contradiction." – Eric Temple Bell (1883-1960)<br /><a href="https://mathstodon.xyz/tags/citation" class="mention hashtag" rel="tag">#<span>citation</span></a> <a href="https://mathstodon.xyz/tags/math%C3%A9matiques" class="mention hashtag" rel="tag">#<span>mathématiques</span></a> <a href="https://mathstodon.xyz/tags/maths" class="mention hashtag" rel="tag">#<span>maths</span></a> <a href="https://mathstodon.xyz/tags/math" class="mention hashtag" rel="tag">#<span>math</span></a></p>
doctorambient<p>As a mathematician, I am upset by *anyone* who starts by setting ε < 0.</p><p><a href="https://mastodon.social/tags/uspol" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>uspol</span></a> <a href="https://mastodon.social/tags/bullshit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bullshit</span></a> <a href="https://mastodon.social/tags/math" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>math</span></a> <a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/fuckingrepublicans" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>fuckingrepublicans</span></a></p>
Elo B-C 🇷🇪<p>🇪🇺 Ravie de vous annoncer le lancement du programme <a href="https://mastodon.scollectif.fr/tags/ErasmusPlus" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ErasmusPlus</span></a> "Petit Bridge at school" dans des écoles françaises, polonaises et néerlandaises à la rentrée 2025 ! 🇫🇷 🇵🇱 🇳🇱 </p><p>🤝 Un partenariat FFB, NBB, PBU (fédérations de <a href="https://mastodon.scollectif.fr/tags/Bridge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Bridge</span></a>) et l'université de Vienne 🇦🇹 </p><p>En savoir plus : <a href="https://tinyurl.com/petitbridgeatschool" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">tinyurl.com/petitbridgeatschoo</span><span class="invisible">l</span></a></p><p><a href="https://mastodon.scollectif.fr/tags/PetitBridge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PetitBridge</span></a> <a href="https://mastodon.scollectif.fr/tags/PetitBridgeAtSchool" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PetitBridgeAtSchool</span></a> <a href="https://mastodon.scollectif.fr/tags/PBAS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PBAS</span></a> <a href="https://mastodon.scollectif.fr/tags/BridgeForPeace" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>BridgeForPeace</span></a> <a href="https://mastodon.scollectif.fr/tags/BridgeEdu" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>BridgeEdu</span></a> <a href="https://mastodon.scollectif.fr/tags/Education" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Education</span></a> <a href="https://mastodon.scollectif.fr/tags/InnovationP%C3%A9dagogique" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>InnovationPédagogique</span></a> <a href="https://mastodon.scollectif.fr/tags/EuropeanEducation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>EuropeanEducation</span></a> <a href="https://mastodon.scollectif.fr/tags/Maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Maths</span></a> <a href="https://mastodon.scollectif.fr/tags/CPS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CPS</span></a> <a href="https://mastodon.scollectif.fr/tags/STEAM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>STEAM</span></a> <a href="https://mastodon.scollectif.fr/tags/SocialSkills" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SocialSkills</span></a> <a href="https://mastodon.scollectif.fr/tags/Cooperation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cooperation</span></a> <a href="https://mastodon.scollectif.fr/tags/TeamPE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TeamPE</span></a> <a href="https://mastodon.scollectif.fr/tags/P%C3%A9dagogie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Pédagogie</span></a></p>
Paysages Mathématiques<p>Theorem of the Day (April 8, 2025) : The Second Isomorphism Theorem<br />Source : Theorem of the Day / Robin Whitty<br />pdf : <a href="https://www.theoremoftheday.org/GroupTheory/SecondIsomorphism/TotDIsomorphism2.pdf" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://www.</span><span class="ellipsis">theoremoftheday.org/GroupTheor</span><span class="invisible">y/SecondIsomorphism/TotDIsomorphism2.pdf</span></a><br />notes : <a href="https://www.theoremoftheday.org/Resources/TheoremNotes.htm#35" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://www.</span><span class="ellipsis">theoremoftheday.org/Resources/</span><span class="invisible">TheoremNotes.htm#35</span></a> </p><p><a href="https://mathstodon.xyz/tags/mathematics" class="mention hashtag" rel="tag">#<span>mathematics</span></a> <a href="https://mathstodon.xyz/tags/maths" class="mention hashtag" rel="tag">#<span>maths</span></a> <a href="https://mathstodon.xyz/tags/math" class="mention hashtag" rel="tag">#<span>math</span></a> <a href="https://mathstodon.xyz/tags/theorem" class="mention hashtag" rel="tag">#<span>theorem</span></a> <span class="h-card" translate="no"><a href="https://mathstodon.xyz/@Theoremoftheday" class="u-url mention">@<span>Theoremoftheday</span></a></span></p>
Marcus Green<p>Yesterday was day 1 of the 3 day International Meeting of the STACK community. </p><p>It was inspiring to be around so many smart people working on improving <a href="https://fosstodon.org/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maths</span></a> education. There was good coverage of the use of JSXGraph for creating questions with graphics that students can interact with . Recent developments in Large Language Models and <a href="https://fosstodon.org/tags/AI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AI</span></a> have made it much easier to create the <a href="https://fosstodon.org/tags/Javascript" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Javascript</span></a> code required for <a href="https://fosstodon.org/tags/JSXGraph" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>JSXGraph</span></a> .</p><p><a href="https://sites.google.com/view/stack2025/schedule?authuser=0" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">sites.google.com/view/stack202</span><span class="invisible">5/schedule?authuser=0</span></a> </p><p><a href="https://fosstodon.org/tags/edtech" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>edtech</span></a> <a href="https://fosstodon.org/tags/education" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>education</span></a> <a href="https://fosstodon.org/tags/math" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>math</span></a> <a href="https://fosstodon.org/tags/mathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mathematics</span></a> <a href="https://fosstodon.org/tags/moodle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>moodle</span></a></p>
ark_00110100<p>Math nerds, what is your favorite equation or expression and why? </p><p>Mine is : Δx · Δp ≥ ħ / 2<br>Because I find poetic that uncertainty is native to reality, it isn’t a failure, it’s fundamental feature! </p><p><a href="https://mastodon.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mathematics</span></a> <a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>physics</span></a></p>
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