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location Oxford, United Kingdom
age 50
visits member for 2 years, 8 months
seen Apr 19 at 21:42

Feb
12
revised Graphical-entry knot theory program for Mac?
added a clarification
Feb
12
answered Graphical-entry knot theory program for Mac?
Dec
4
awarded  Editor
Dec
4
revised Complexity of multiplying Cauchy matrix by a vector
fixing the terminology
Dec
4
comment Complexity of multiplying Cauchy matrix by a vector
I've edited the question. Hopefully someone reviews the changes.
Dec
4
suggested suggested edit on Complexity of multiplying Cauchy matrix by a vector
Nov
29
comment Complexity of multiplying Cauchy matrix by a vector
this is the problem of multiplying a vector by a matrix, not solving linear equations...
Nov
24
answered Practical applications of the Fantappiè transform
Sep
17
comment a question about odd cycle
isn't a proof for $k=1$ trivial? Take 2 vertices $u_0,u_2$ at distance 2 (say, $u_0u_1u_2$ is a path connecting them). Then there should be a length $2k+1=3$ path $u_0v_1v_2u_2$ between them, too. Now take all the vertices $u_i$ and $v_j$ - they form a 5-path, right?
Aug
14
awarded  Supporter
Sep
22
awarded  Teacher
Sep
8
answered Slick proof the determinant is an irreducible polynomial