User Yuichiro Fujiwara

45 votes

Accepted

Show that this ratio of factorials is always an integer

answered May 11, 2013 at 7:37

32 votes

New grand projects in contemporary math

answered Dec 30, 2012 at 22:20

19 votes

Math for a cake

answered Dec 29, 2012 at 10:00

17 votes

Modern Mathematical Achievements Accessible to Undergraduates

answered May 5, 2013 at 20:22

17 votes

Approximation of sum of the first binomial coefficients for fixed N

answered Feb 5, 2017 at 15:26

16 votes

Random vs Unknown

answered Oct 16, 2013 at 5:20

15 votes

Mathematical Paper That Just Links Two Different Fields of Sciences

answered Mar 28, 2013 at 14:52

14 votes

What are the major open problems in design theory nowaday?

answered Jan 10, 2013 at 20:05

13 votes

Two questions about combinatorics journals

answered Apr 4, 2013 at 18:34

13 votes

Accepted

On the Steiner system $S(4,5,11)$

answered Jun 8, 2014 at 18:15

11 votes

Are there proofs that you feel you did not "understand" for a long time?

answered May 17, 2013 at 3:22

10 votes

Handling arXiv feeds to avoid duplicates

answered Jan 4, 2013 at 6:09

10 votes

Should science authors discourage / boycott the recent push for author IDs

answered Jan 6, 2013 at 14:23

10 votes

Accepted

Ways of choosing k items out of n with exactly one symbol in common

answered Nov 5, 2012 at 7:45

9 votes

Best upper bound on rate for q-ary codes

answered May 12, 2013 at 0:19

9 votes

Accepted

Bounded Hamming distance

answered Apr 30, 2013 at 4:36

9 votes

Accepted

Mathematical research papers in general science journals

answered Sep 13, 2014 at 11:37

8 votes

Accepted

covering designs of the form $(v,k,2)$

answered Jan 3, 2015 at 23:39

8 votes

Number of Permutations?

answered Oct 15, 2013 at 23:09

8 votes

What is the largest number of k-element subsets of a given n-element set S such that…

answered May 31, 2013 at 9:28

8 votes

What are some examples of mathematicians who had an unconventional education?

answered Jun 12, 2013 at 11:17

7 votes

Bounded Hamming distance

answered May 1, 2013 at 1:23

7 votes

Accepted

On the maximum number of $t$-subset of $\{1,\ldots, n\}$ having pairwise singleton or empty intersections

answered Sep 14, 2014 at 1:59

7 votes

Accepted

Constructions of $2-(v,3,3)$-designs

answered Dec 10, 2013 at 16:33

7 votes

Almost Hadamard matrices

answered Feb 5, 2014 at 15:46

7 votes

Accepted

Codes with a twisted cyclic action

answered May 22, 2017 at 4:40

7 votes

Accepted

"Codes" in which a group of words are pairwise different at a certain position

answered Jun 20, 2014 at 14:57

6 votes

Accepted

Is there an infinite number of combinatorial designs with $r=\lambda^{2}$

answered Dec 27, 2012 at 17:59

6 votes

What is a random number? (poll experiment)

answered Jan 1, 2013 at 23:08

5 votes

Hot-topics in error correcting coding related to interesting math. ?

answered Jan 4, 2013 at 11:14

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57 Answers

Show that this ratio of factorials is always an integer

New grand projects in contemporary math

Math for a cake

Modern Mathematical Achievements Accessible to Undergraduates

Approximation of sum of the first binomial coefficients for fixed N

Random vs Unknown

Mathematical Paper That Just Links Two Different Fields of Sciences

What are the major open problems in design theory nowaday?

Two questions about combinatorics journals

On the Steiner system $S(4,5,11)$

Are there proofs that you feel you did not "understand" for a long time?

Handling arXiv feeds to avoid duplicates

Should science authors discourage / boycott the recent push for author IDs

Ways of choosing k items out of n with exactly one symbol in common

Best upper bound on rate for q-ary codes

Bounded Hamming distance

Mathematical research papers in general science journals

covering designs of the form $(v,k,2)$

Number of Permutations?

What is the largest number of k-element subsets of a given n-element set S such that…

What are some examples of mathematicians who had an unconventional education?

Bounded Hamming distance

On the maximum number of $t$-subset of $\{1,\ldots, n\}$ having pairwise singleton or empty intersections

Constructions of $2-(v,3,3)$-designs

Almost Hadamard matrices

Codes with a twisted cyclic action

"Codes" in which a group of words are pairwise different at a certain position

Is there an infinite number of combinatorial designs with $r=\lambda^{2}$

What is a random number? (poll experiment)

Hot-topics in error correcting coding related to interesting math. ?