Reputation
43,181
Next tag badge:
392/400 score
103/80 answers
Badges
2 51 126
Newest
 Nice Answer
Impact
~357k people reached

Nov
26
revised Deeper studies in Category Theory: suggestions and references.
deleted 1 characters in body
Nov
25
revised On the definition of the direct sum in vector spaces
added 59 characters in body; edited tags
Nov
19
revised Volume 3 of Johnstone's “Sketches of an Elephant”
edited tags
Nov
17
revised Algebraic structures with one binary operation
edited tags
Nov
17
revised Algebraic structures with one binary operation
rolled back to a previous revision
Nov
17
revised Algebraic structures with one binary operation
edited tags
Nov
17
revised An exact homology sequence associated with a principal SO(n) bundle
edited tags
Nov
14
revised ETCS set theory: Are empty sets isomorphic?
added 166 characters in body
Nov
14
revised ETCS set theory: Are empty sets isomorphic?
edited tags
Nov
13
revised Prove associative of $(A \setminus B)\cup C = A \setminus (B \cup C)$
edited tags
Nov
11
revised Functions with the domain having greater cardinality than $\aleph_1$
edited tags
Nov
7
revised Associativity of a composition $x ∘ y = xy+\sqrt{(x^2-1)(y^2-1)}$
edited tags
Nov
6
revised ZFC and irrational numbers
edited tags
Nov
5
revised Are concrete categories whose arrows don't preserve all the structure ever interesting?
added 178 characters in body
Nov
4
revised set theory: show that the following arguments are equivalent (transitivity)
edited tags
Nov
2
revised What is a good book to study classical projective geometry for the reader familiar with algebraic geometry?
edited tags
Nov
1
revised Some questions on abelian category
edited tags
Nov
1
revised How to prove exactness implies complex?
edited tags
Oct
29
revised Free Metric Space?
deleted 54 characters in body
Oct
27
revised free object isomorphisms
deleted 3 characters in body; edited tags