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Apr
17
reviewed Close Calculus II Function Construction
Apr
17
reviewed Close Largest eigenvalues of AA' and A'A
Apr
17
reviewed Close In the card came “Projective Set”, show that 7 cards do always contain a set.
Apr
17
comment Coupon collector variation (with deleterious coupons and tolerance)
It is better than it was, but it would be better still if you outlined what progress you have made with solving the problem.
Apr
17
reviewed Reopen Coupon collector variation (with deleterious coupons and tolerance)
Apr
17
reviewed Close Prove an eigenvector for two matrices is also the eigenvector for the product of those matrices.
Apr
17
reviewed Leave Open Transitivity of a stochastic order
Apr
17
answered Transitivity of a stochastic order
Apr
17
reviewed Close Proving $k$ is divisible by $3$ iff the sum of the digits of $k$ is divisible by 3
Apr
17
reviewed Leave Open Combinatorial Interpretation of these two identities
Apr
17
reviewed Close Prove $\lim_\limits{x\to\infty}\dfrac{P_k(x)}{P_{k+1}(x)}=0$
Apr
17
comment Prove $\lim_\limits{x\to\infty}\dfrac{P_k(x)}{P_{k+1}(x)}=0$
possible duplicate of Finding the limit of $\frac{Q(n)}{P(n)}$ where $Q,P$ are polynomials
Apr
16
reviewed Leave Open Product of two infinite sequences
Apr
16
reviewed Reopen Existence of integer.
Apr
16
reviewed Leave Open Prove $(n,m)R(r,s) \equiv (n>r) \text{ or } (n=r \text{ and } m\geq s)$ is an order relation.
Apr
16
reviewed Leave Open Abelian groups axioms with minus in place of plus
Apr
15
reviewed Looks OK Representing every positive rational number in the form of $(a^n+b^n)/(c^n+d^n)$
Apr
15
comment Representing every positive rational number in the form of $(a^n+b^n)/(c^n+d^n)$
Could you explain where the 5 and 30 come from?
Apr
15
reviewed Reopen Number of circuits that surround the square.
Apr
15
reviewed Close Are intersection of power set and power set of intersection equal?