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 Oct 25 answered Another way of counting probability Oct 25 answered Sequences with Infinite Number of Accumulation Points Oct 25 asked Relatively tight upper and lower bounds for surreal numbers Oct 24 answered What does $\frac{dx}{dx}=1$ mean? Oct 18 asked Square root of continued fraction Oct 10 answered Two spaces contain the same vector, can we say the space with smaller dimension is a subspace of the larger one? Oct 10 asked Deriving topology from sequence convergence/limits? Oct 9 answered Why does $\sqrt{2x+15}-6=x$ have an “imposter” solution? Oct 6 answered Why is $f(x) \delta(x) = f(0)\delta(x)$ only true when $x=0$? Oct 3 answered $\mathbb{R}$ is not contained in $\mathbb{C}$ Oct 3 asked Basis for series that converge for all complex numbers? Oct 1 answered Probability of picking the white ball last? Sep 27 answered How many different logical operations can there be? Sep 27 answered Integer division and modulo by $\mathbb{2^n-1}$ Sep 27 asked Does there exist something between topological space and metric space? Sep 19 answered Weird question about inverses Sep 18 answered Is zero a scalar? Sep 15 answered What are properties, operators, and where do we get numbers from? Sep 11 answered Geometric meaning of a vector space Sep 10 answered Find $z=1+\epsilon+\cdots+\epsilon^{n-1}$ where $\epsilon^{2n}=1$, $n\in \mathbb{N},\epsilon\in \mathbb{C}$