10,926 reputation
33781
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location Moscow, Russia
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visits member for 4 years, 6 months
seen 1 hour ago

Jan
19
reviewed Close Solve: If $3a=2b$, then what is the value of $\frac{3a-b}{2a+b}$?
Jan
19
reviewed Leave Open Given a general 3D Matrix operation … who can I apply “1/2” of the effect of it ?
Jan
19
reviewed Looks OK Find prime factorization of $2^{22} + 1$
Jan
19
reviewed Close cohomology ring of a quotient space
Jan
18
reviewed Close Simplify the radical expression
Jan
18
reviewed Reject Fallacy of denying the hypothesis
Jan
18
reviewed Reject Need function for tunable sigmoid 2D surface
Jan
18
reviewed Close Are there any mistakes in this proof of FLT
Jan
18
reviewed Close Finding the value of $a^2 + b^2 + c^2 + d^2$
Jan
18
reviewed Close Why integration by part (not partial) is considered everywhere useful?
Jan
18
reviewed Leave Open How could we define $\cos (x)$ in terms of $x$?
Jan
18
reviewed Leave Open How prove this limits $\lim_{n\to\infty}\frac{v_{5}(1^1\cdot 2^2\cdot 3^3\cdot 4^4\cdots\cdot n^n)}{n^2}=\frac{1}{8}$
Jan
18
reviewed Close (Soft Question) How active an area of research is Non-Commutative Geometry?
Jan
18
reviewed Close Continuity in a normed space
Jan
18
reviewed Close Associative Property for Composition of Functions
Jan
18
reviewed Close Help with Theorem III.3.11 in Hungerford's algebra book
Jan
18
reviewed Close Simplifying a complex number
Jan
18
reviewed Close How to prove that?
Jan
18
reviewed Close Sum of primes up to p is multiple of p?
Jan
18
reviewed Close How many pairs of integers $(A, B)$ are there in the range $[1,\ldots, N]$, such that $\gcd(A,B) = B$?