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Oct
18
comment Prove that Square Root of a prime number is Irrational through contradiction.
Depending on who you are writing the proof for, I might replace "Hence $p$ divides $a$" by "So that $p$ divides $a^2$ and hence also divides $a$". (There is a definite step in the logic that maybe ought to highlighted).
Sep
30
awarded  Explainer
Sep
29
awarded  Nice Answer
Aug
5
comment Exponential Diophantine: $2^{3x}+17=y^2$
Are you asking a question here, or are you just giving us orders?
Jul
31
reviewed Close analysis of Sequences and subsequence.
Jul
31
reviewed Close Verify that a set is a group under $2 \times 2$ matrix multiplication
Jul
31
reviewed Close Questions about prime numbers
Jul
31
reviewed Close What percentage of Jim's weight is Bob's weight?
Jul
31
reviewed Close How to show some sets are isomorphic?
Jul
31
reviewed Close How to prove that two lines in 3D are not parallel and do not intersect; also, how to find the distance between them?
Jul
31
reviewed Close Combinations, help please
Jul
10
reviewed Close Factorization of parabolic subgroups.
Jul
10
reviewed Close How to prove which is bigger?
Jul
9
reviewed Close Qual Question concerning martingale
Jul
9
reviewed Close What is the value of $\angle x$
Jul
9
reviewed Leave Open How to prove a levi-civita symbol and kronecker delta relationship
Jul
9
reviewed Close Value of the logarithmic expression
Jul
9
reviewed Close On the nilpotence of the matrix $AB-BA$
Jul
8
reviewed Close perturbation theory solution of forced Duffing's equation
Jul
8
reviewed Leave Open Does counting make sense?