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May
10
comment Proving a metric with absolute value
Monotonically increasing is not enough. $x\mapsto x^2$ is also monotonically increasing for $x\ge 0$, and yet $|x-y|^2$ is not a metric.
May
10
comment Factorise A number in to product of two numbers
Do you really menan "more than $100$" with large number? Or "with more than$100$ digits"?
May
10
answered Solving $315 x \equiv 5 \pmod {11}$
May
10
answered Why are the rings $A$ and $B$ not isomorphic?
May
10
comment Please help with this hard inequality provement
Don't you wantto require $m,n>0$?
May
10
comment Showing $V\cong W$ if $\dim V^H=\dim W^H$
You may want to require finite dimensions.
May
10
comment If $g$ is continuous and $f$ is s.t $f=g$ for $|x|<1$ then $f$ is continuous at 0
$\delta<1$ is a non-sequitur, but at least it is a wlog.
May
10
comment Security of permutation function
It is a simple method and you published it here, so it is not secure.
May
10
revised A binomial random number generating algorithm that works when $ n \times p $ is very small
added 963 characters in body
May
10
answered A binomial random number generating algorithm that works when $ n \times p $ is very small
May
10
comment $lim_{n \to \infty} [\frac1{n+1} + \frac1{n+2} + … + \frac1{kn}]=?$, where $k \gt 1$ is an integer.
Well, the final $=$ is not fully justified.
May
10
answered The limit of the derivative of an increasing and bounded function is always $0$?
May
10
answered How can I solve: ${\left [{x+1}\over2\right]}={x-1\over 3}$?
May
10
answered How is the Harris Corner detector derived from a Taylor Expansion?
May
9
answered How prove this frog can finite steps jump the point $(\frac{1}{5},\frac{1}{17})$
May
9
revised How prove this frog can finite steps jump the point $(\frac{1}{5},\frac{1}{17})$
added 23 characters in body
May
9
comment Superassociative operation
Try $a\circ_1b=1$.
May
9
comment Ground plan of Forward direction - Let $p$ be an odd prime. Prove $x^{2} \equiv -1 \; (mod \, p)$ has a solution $\iff p\equiv 1 \; (mod 4)$
Your first part look sutterly complicated. Primes $\ne 2$ are odd, and odd numbers are either $\equiv 1\pmod 4$ or $\equiv 3\pmod 4$.
May
9
comment I want to find a cubic extension of $\mathbb{Q}$
No that extension is of degre $8$
May
9
comment Homeomorphic or Homotopic
Two 3D objects that are homeomorphic need not be transformable (within 3-space) into each other. That would require that the presumed homeomorphism from one to the other is homotopic to its embedding (both viewed as functions into the topological space $\mathbb R^3$ rather than the objects themselves). - For example two interlocked circles are homeomorphic to two noninterlocked circles, but you cannot transform them; same for a knotted and an unknotted torus