13,355 reputation
32973
bio website sites.google.com/site/rknmodn
location Halifax, Canada
age 32
visits member for 3 years, 9 months
seen Feb 26 at 5:52

This account is no longer in use.


Sep
23
revised Prove that $\sum_{k=0}^r {m \choose k} {n \choose r-k} = {m+n \choose r}$
edited tags
Sep
23
revised How to calculate no. of binary strings containg substring “00”?
edited tags
Sep
23
revised How to solve this using using stirling approx?
edited tags
Sep
12
revised “Monotone Convergence Theorem” $\implies$ “least upper bound property”
edited tags
Sep
12
revised Binomial and series with 2 coefficients
Fixed error
Sep
2
revised Counting the number of subgraphs isomorphic with the following digraph
added 107 characters in body
Aug
31
revised Factorising complex equations
edited tags
Aug
30
revised A problem on limit
added 137 characters in body
Aug
30
revised Find order of $xy$ provided $x^2=e, y^3=e$ and $yxy=xy^2x$
added 8 characters in body; edited tags; edited title
Aug
29
revised How is $\{ (1/n , 1 + 1/n) \}_{n \geq 1}$ a cover for $(0,2)$?
edited title
Aug
29
revised Problem on directed graph involving $\gcd$
Added drawing of graph
Aug
29
revised Calculate the Determinant?
Neatened it up; corrected arithmetic.
Aug
28
revised $\frac1a+\frac1b+\frac1c=0 \implies a^2+b^2+c^2=(a+b+c)^2$?
edited tags
Aug
28
revised mean of two consecutive number helps proving both number equals..
edited tags
Aug
28
revised How do I explain the fallacy $\frac00=2$ in this case?
edited tags
Aug
28
revised Critique on a proof by induction that $\sum_{i=1}^n i^2= n(n+1)(2n+1)/6$?
re-titled; re-tagged
Aug
28
revised Simultaneous solution(s) to $a^2+4b^2+4ab=0$ and $a^2+4b^2+32+16a-8b=0$?
re-titled; re-tagged
Aug
27
revised Area of a region between curves and a point.
edited tags
Aug
27
revised Find an algorithm to compute $(1! \cdot 2! \cdot3!\cdots n! ) \,\%\, x$.
edited tags
Aug
25
revised Determine all possible automorphisms of a graph
Added drawing; other minor touch-ups.