38 reputation
7
bio website
location
age
visits member for 2 years
seen Jan 9 '13 at 14:13

Mar
4
awarded  Popular Question
Jan
3
revised Does complementary relation($\overline R$) is transitive?
edited title
Jan
3
comment Does complementary relation($\overline R$) is transitive?
Sorry,I edited body of question.
Jan
3
comment Does complementary relation($\overline R$) is transitive?
Sorry.I think new question is correct.
Jan
3
revised Does complementary relation($\overline R$) is transitive?
deleted 6 characters in body
Jan
3
revised Does complementary relation($\overline R$) is transitive?
added 36 characters in body
Jan
3
asked Does complementary relation($\overline R$) is transitive?
Dec
16
revised Problem about combinatorics
deleted 53 characters in body
Dec
15
revised Problem about combinatorics
edited body
Dec
15
awarded  Commentator
Dec
15
comment Problem about combinatorics
@I edited my answer , does new answer is true?
Dec
15
revised Problem about combinatorics
added 53 characters in body
Dec
15
revised Problem about combinatorics
edited body
Dec
15
comment Problem about combinatorics
Do you consider set of four ? we shouldn't use pairs ca AND cc in cases.can you explain more? Thanks.
Dec
15
revised Problem about combinatorics
edited body
Dec
15
asked Problem about combinatorics
Nov
30
awarded  Supporter
Nov
30
comment Two problem number-theory
complete and useful for me.
Nov
30
accepted Two problem number-theory
Nov
30
awarded  Student