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🦇​ Corto 🦇​<p>Viendo un vídeo de matemáticas me está tocando un poco la fibra una chorrada. Está explicando que el cuadrado de 5 y cada cuadrado sucesivo que hagamos del número resultante tienen el comportamiento particular de que siempre sus últimas cifras son el número anterior o una parte de este, que llama números 10-ádicos.</p><p>5^2 = 25<br>25^2 = 625<br>625^2 = 390.625<br>390.635^2 = 152.587.890.625</p><p>Y ahí de repente se ha puesto "como es posible que un número sea su mismo cuadrado, si n^2 = n y resolvemos la ecuación nos da que n es 1 o 0, no cualquier 10-adico, ¿cómo es posible?"</p><p>Lo mismo es que te acabas de columpiar inventándote la ecuación porque los números 10-ádicos solo cumplen que n^2 = n + cosas a la izquierda de dicho número. Que ni siquiera es una constante si me dices que no se repiten el 100% de las cifras.</p><p><a href="https://eldritch.cafe/tags/matem%C3%A1ticas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>matemáticas</span></a></p>
Ricardo<p>Confusión en serie | El Pingüino Tolkiano <br> <br><a href="https://elpinguinotolkiano.wordpress.com/2025/04/16/confusion-en-serie/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">elpinguinotolkiano.wordpress.c</span><span class="invisible">om/2025/04/16/confusion-en-serie/</span></a> <br> <br><a href="https://mastodon.social/tags/Educaci%C3%B3n" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Educación</span></a>, <a href="https://mastodon.social/tags/Matem%C3%A1ticas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Matemáticas</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Separación por posición. <a href="https://jaalonso.github.io/exercitium/posts/2014/06/09-separacion_por_posicion/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/06/09-separacion_por_posicion/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Número de inversiones. <a href="https://jaalonso.github.io/exercitium/posts/2014/06/06-numero_de_inversiones/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/06/06-numero_de_inversiones/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Descomposiciones triangulares. <a href="https://jaalonso.github.io/exercitium/posts/2014/06/05-descomposiciones_triangulares/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/06/05-descomposiciones_triangulares/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Código de las alergias. <a href="https://jaalonso.github.io/exercitium/posts/2014/06/03-alergias/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/06/03-alergias/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
hcv13 🇵🇸<p><a href="https://mastodon.la/tags/Matem%C3%A1ticas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Matemáticas</span></a> <a href="https://mastodon.la/tags/Topolog%C3%ADa" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Topología</span></a></p><p>Leopold Vietoris, un topólogo supercentenario</p><p><a href="https://culturacientifica.com/2025/04/09/leopold-vietoris-un-topologo-supercentenario/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">culturacientifica.com/2025/04/</span><span class="invisible">09/leopold-vietoris-un-topologo-supercentenario/</span></a></p>
hcv13 🇵🇸<p><a href="https://mastodon.la/tags/Matem%C3%A1ticas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Matemáticas</span></a> </p><p>Where Does Meaning Live in a Sentence? Math Might Tell Us.</p><p><a href="https://www.quantamagazine.org/where-does-meaning-live-in-a-sentence-math-might-tell-us-20250409/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">quantamagazine.org/where-does-</span><span class="invisible">meaning-live-in-a-sentence-math-might-tell-us-20250409/</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Reiteración de una función. <a href="https://jaalonso.github.io/exercitium/posts/2014/05/30-reiteracion_de_funciones/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/05/30-reiteracion_de_funciones/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Elementos de una matriz con algún vecino menor. <a href="https://jaalonso.github.io/exercitium/posts/2014/05/29-algun_vecino_menor/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/05/29-algun_vecino_menor/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Números triangulares con n cifras distintas. <a href="https://jaalonso.github.io/exercitium/posts/2014/05/27-triangulares_con_cifras/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/05/27-triangulares_con_cifras/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Mayor producto de las ramas de un árbol. <a href="https://jaalonso.github.io/exercitium/posts/2014/05/22-mayor_producto_de_las_ramas_de_un_arbol/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/05/22-mayor_producto_de_las_ramas_de_un_arbol/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Número de pares de elementos adyacentes iguales en una matriz. <a href="https://jaalonso.github.io/exercitium/posts/2014/05/21-pares_adyacentes_iguales/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/05/21-pares_adyacentes_iguales/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p>Introducción al cálculo simbólico con Maxima. <a href="https://web.archive.org/web/http://www.cs.us.es/~jalonso/publicaciones/Introduccion_al_calculo_simbolico_con_Maxima.pdf" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">web.archive.org/web/http://www</span><span class="invisible">.cs.us.es/~jalonso/publicaciones/Introduccion_al_calculo_simbolico_con_Maxima.pdf</span></a> <a href="https://mathstodon.xyz/tags/C%C3%A1lculoSimb%C3%B3lico" class="mention hashtag" rel="tag">#<span>CálculoSimbólico</span></a> <a href="https://mathstodon.xyz/tags/Maxima" class="mention hashtag" rel="tag">#<span>Maxima</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p>Exámenes de &quot;Programación funcional con Haskell&quot; Vol. 2 (Curso 2010–11). <a href="https://web.archive.org/web/https://raw.githubusercontent.com/jaalonso/Examenes_de_PF_con_Haskell_Vol2/master/Libro/Examenes_de_PF_con_Haskell_Vol2.pdf" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">web.archive.org/web/https://ra</span><span class="invisible">w.githubusercontent.com/jaalonso/Examenes_de_PF_con_Haskell_Vol2/master/Libro/Examenes_de_PF_con_Haskell_Vol2.pdf</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p>Ejercicios de &quot;Informática de 1º de Matemáticas&quot; (2010–11). <a href="https://web.archive.org/web/https://www.cs.us.es/~jalonso/cursos/i1m-10/ejercicios/ejercicios-I1M-2010.pdf" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">web.archive.org/web/https://ww</span><span class="invisible">w.cs.us.es/~jalonso/cursos/i1m-10/ejercicios/ejercicios-I1M-2010.pdf</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Regiones determinadas por n rectas del plano. <a href="https://jaalonso.github.io/exercitium/posts/2014/05/19-regiones/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/05/19-regiones/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Ampliación de matrices por columnas. <a href="https://jaalonso.github.io/exercitium/posts/2014/05/16-amplia_columnas/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/05/16-amplia_columnas/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>
hcv13 🇵🇸<p><a href="https://mastodon.la/tags/Matem%C3%A1ticas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Matemáticas</span></a> <a href="https://mastodon.la/tags/Topolog%C3%ADa" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Topología</span></a> <a href="https://mastodon.la/tags/Art%C3%ADculos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Artículos</span></a> </p><p>1. Las notas del examen de topología</p><p><a href="https://mujeresconciencia.com/2025/03/23/las-notas-del-examen-de-topologia/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">mujeresconciencia.com/2025/03/</span><span class="invisible">23/las-notas-del-examen-de-topologia/</span></a></p><p>2. Liudmila Vsévolovna Kéldysh, de la teoría de conjuntos a la topología geométrica</p><p><a href="https://mujeresconciencia.com/2025/03/26/lyudmila-vsevolodovna-keldysh-de-la-teoria-de-conjuntos-a-la-topologia-geometrica/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">mujeresconciencia.com/2025/03/</span><span class="invisible">26/lyudmila-vsevolodovna-keldysh-de-la-teoria-de-conjuntos-a-la-topologia-geometrica/</span></a></p>
José A. Alonso<p><a href="https://mathstodon.xyz/tags/Exercitium" class="mention hashtag" rel="tag">#<span>Exercitium</span></a>: Emparejamiento binario. <a href="https://jaalonso.github.io/exercitium/posts/2014/05/15-emparejamiento_binario/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">jaalonso.github.io/exercitium/</span><span class="invisible">posts/2014/05/15-emparejamiento_binario/</span></a> <a href="https://mathstodon.xyz/tags/Haskell" class="mention hashtag" rel="tag">#<span>Haskell</span></a> <a href="https://mathstodon.xyz/tags/Programaci%C3%B3nFuncional" class="mention hashtag" rel="tag">#<span>ProgramaciónFuncional</span></a> <a href="https://mathstodon.xyz/tags/Matem%C3%A1ticas" class="mention hashtag" rel="tag">#<span>Matemáticas</span></a></p>