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Mar
11
reviewed Approve The number of elements of order $p$ in a $p$-group is -1 mod $p$?
Feb
7
reviewed Approve Let $R$ be a commutative ring and let $I$ and $J$ be ideals of $R$. Show $IJ$ is an ideal of $R$.
Jul
6
reviewed Approve Torsion free flat module over a discrete valuation ring is Cohen-Macaulay
Mar
2
reviewed Approve Normalizer of an open subgroup of a compact group
Mar
2
reviewed Approve Irreducible polynomials as formal power series
Feb
26
reviewed Approve Why must this be a closed curve?
Feb
22
reviewed Approve independent/dependent values at different frequencies and phases
Feb
22
reviewed Approve Calculus: tangents and limits
Feb
8
reviewed Approve Suggestions on how to verify this partial differential equation solution
Feb
7
reviewed Approve $f(f(\sqrt{2}))=\sqrt{2}$ then f has a fixed point
Jan
25
reviewed Approve Find the largest interval for which the following series is convergent at all points x in it
Jan
22
reviewed Approve Pigeon hole principle application
Jan
18
reviewed Approve Recursive algorithm correctness: problem.
Jan
15
reviewed Leave Open Definition: $a \prec b$ , $ a \npreceq b$ , $a,b \in \mathbb{R}$
Jan
14
reviewed Approve Residue of a a complex quotient
Jan
13
reviewed Approve How to prove that $n^7\equiv n^3\mod40,\forall n\in\mathbb{Z}$
Jan
5
reviewed Approve How is the number of possible pyramidal numbers calculated?
Dec
5
reviewed Approve Lawvere theories: an equivalence.
Dec
5
reviewed Approve Foundation for category theory
Nov
7
reviewed Approve Isomorphism of quotient ring of polynomial ring