Hackers' Pub

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

José A. Alonso @Jose_A_Alonso@mathstodon.xyz

4/2/2025, 5:15:08 PM

Public

Demostraciones con Lean4 y con Isabelle/HOL de "⋂_i, (A(i) ∩ B(i)) = (⋂_i, A(i)) ∩ (⋂_i, B(i))". https://jaalonso.github.io/calculemus/posts/2021/06/03-interseccion_de_intersecciones/ #LeanProver #IsabelleHOL #Math #Calculemus

Demostraciones de "⋂_i, (A(i) ∩ B(i)) = (⋂_i, A(i)) ∩ (⋂_i, B(i))"

Demostrar con Lean4 y con Isabelle/HOL que \[ ⋂_i (A_i ∩ B_i) = (⋂_i A_i) ∩ (⋂_i B_i) \] Para ello, completar la siguiente teoría de Lean4: import Mathlib.Data.Set.Basic import Mathlib.Tactic open Se

jaalonso.github.io · Calculemus

If you have a fediverse account, you can quote this note from your own instance. Search https://mathstodon.xyz/users/Jose_A_Alonso/statuses/114269494223357486 on your instance and quote it. (Note that quoting is not supported in Mastodon.)