erou boosted
erou boosted

Hey Fediverse! I would like to create a little game with some mini-puzzles coming from the world of "hacking"/crypto. I would like it to be very simple so I thought of asking to decode a Morse code sentence, or decipher something encrypted with Cesar cipher (or even a simpler one).

Any other ideas? 😃
Thanks!
(Boosts appreciated, of course 🙏)

erou boosted

Hey vous savez, le filtre “vieux” sur #faceapp ?
En fait on peut l’appliquer, puis l’appliquer à nouveau, puis encore une fois, et à la fin on ne dort plus jamais de sa vie quand on voit les résultats.

twitter.com/Bouletcorp/status/

erou boosted
erou boosted

Here are #animated #gifs of the representation of #NumericalIntergration #approximations with increasing numbers of strips. Represented are the Rectangle Method, Trapezium Rule and Simpson’s Rule. Note how much faster the second and third methods improve the approximation the exact blue curve in each case as the number of strips increases. Produced using #wxmaxima. They are all available on #Wikipedia.

#MyWork #Mathematics #Maths #Numerics #RectangleMethod #TrapeziumRule #SimpsonsRule #CCBYSA

So apparently you can use mathstodon from China, that's very nice! 😎

erou boosted

Il y a trente ans, les dividendes représentaient moins de 5% de la richesse créée dans l’industrie ; aujourd’hui, cette part s’élève à 25%. Pour tout euro d’investissement net, les entreprises distribuaient 0,50€ de dividendes en 1978, contre 2€ en 2011. monde-diplomatique.fr/2019/07/

There exists infinitely many prime numbers p such that p-2 is also prime.

There exists a unique prime number p such that p-1 is also prime.

erou boosted

Tinariwen - Live at Womad
youtu.be/uUS0-0Fv7c8?t=49

Pour terminer un week end chaud et doux, le blues touareg de Tinariwen.

erou boosted

Yesterday I discovered that in Python the lists `[[]]+[[]]` and `2*[[]]` look the same but are not the same...
I had a hard time debugging a program because of that 🙃...

```
>>> L = [[]] + [[]]
>>> L
[[], []]
>>> L[0].append(1)
>>> L
[[1], []]
>>> L = 2*[[]]
>>> L
[[], []]
>>> L[0].append(1)
>>> L
[[1], [1]]
```

erou boosted

kindle v epub Show more

erou boosted

14 applications gratuites pour jouer avec les #maths qui n’ont rien à envier aux applications commerciales. Formidable boulot de @multimaths @AcademieDijon #Merci buff.ly/2NBrpdw

erou boosted
erou boosted

An app using AI to 'undress' women offers a terrifying glimpse into the future | Arwa Mahdawi

Unless we start taking online misogyny seriously, we are going to face a future where women may not be able to exist online
Sign up for the Week in Patriarchy, a newsletter​ on feminism and sexism sent every Saturday.
Continue reading... friendica.hubup.pro/objects/17

Note absurde sur la langue française : en français «moins par moins» ça ne fait pas toujours plus : quand on dit «Ça n'a jamais tué personne» ça ne veut pas dire que ça a tué quelqu'un.

Bonne journée et hydratez-vous !

We are one step closer to finding the discrete logarithm easy! [1]

Given g, y ∈ Fₚ, when you have

gᵈ = y

the discrete log problem is to find d.

It is a hard problem in general, and it was at the root of lots of cryptographic applications. It's not so trendy today because quantum computers break it. The result in [1] is valid with classic computers though!

[1] Discrete logarithms in quasi-polynomial time in finite fields of fixed characteristic, arxiv.org/pdf/1906.10668.pdf

Show more
Mathstodon

A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.

Use \( and \) for inline LaTeX, and \[ and \] for display mode.