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91/100 score
20/20 answers
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May
21
reviewed Close Closed form formula for discrete sums
May
21
reviewed Close join-semilattice vs Upper-semilattice ?! definition problem ?!
May
21
reviewed Close Solve this: $log_3{a}=log_{10}{a}$
May
21
reviewed Close Easy ways to calculate $\dim \mathbb{K}[x,y]/(f,g)$
May
21
reviewed Close data and signals
May
21
reviewed Close What do the symbols $\mathbb{Z}$ and $\mathbb{Z}_n$ mean on this discrete math problem?
May
21
reviewed Close If $|G| = pqr$ for $p<q<r$ primes and all the Sylow groups are normal; is $G$ abelian?
May
21
reviewed Close Encode/decode hexadecimal challenge
May
21
reviewed Close statistics - estimator and biased unbiased
May
21
reviewed Close solve the inhomogeneous system
May
21
answered The free monoid functor is fully faithful?
May
20
revised Intuition behind independence & conditional probability
added 1 character in body
May
19
comment Question about limit and dividing by zero
that's the spirit!
May
19
comment Question about limit and dividing by zero
no @Rzeta, not at all.
May
19
answered Question about limit and dividing by zero
May
19
comment Can a nonempty set ever equal its Cartesian product with another set?
OP seems to be asking about actual equality, not bijective correspondences.
May
19
answered Can a nonempty set ever equal its Cartesian product with another set?
May
19
answered Base of the $\mathbb{R}$ vector space that contains all real functions: $f(x) \not= 0$ for finitely many x $\in\mathbb{R}$
May
19
answered Possible textbook redundancy concerning invertible mappings
May
18
comment Brouwer's fixed-point theorem and the intermediate value theorem?
Because if $f(x)>t$, then $f(x+h)>t$ for sufficiently small $|h|$, by continuity of $f$.