crf
Reputation
2,710
Top tag
Next privilege 3,000 Rep.
 Dec 8 answered de morgan law $A\setminus (B \cap C) = (A\setminus B) \cup (A\setminus C)$ Dec 6 comment Exponential Growth You've almost certainly been given a formula for this type of growth. From that formula, can you figure out what an expression would for the population to be at some level $P$, and twice that rate $2P$? Dec 5 asked Let $T$ be a spanning tree. Prove that for cycles $C,D$, $E(C)\backslash E(T) = E(D)\backslash E(T)\implies C=D$ Dec 5 revised Is there a proof for Archimedes' pictorial proof for the approximation of pi? deleted 3 characters in body Dec 5 revised Is there a proof for Archimedes' pictorial proof for the approximation of pi? deleted 3 characters in body Dec 5 comment Is there a proof for Archimedes' pictorial proof for the approximation of pi? @user7530 It's not a formula for approximating $\pi$; it's a proof that the procedure for approximating $\pi$ really works. Dec 5 answered Is there a proof for Archimedes' pictorial proof for the approximation of pi? Dec 4 revised $f$-factors and fractional $f$-factors and odd cycles added 268 characters in body Dec 4 answered Prove that a circle has an infinite number of tangents Nov 29 asked $f$-factors and fractional $f$-factors and odd cycles Nov 27 awarded Popular Question Nov 6 accepted Prove that the number of pairs of edges that cross in a drawing of $K_n$ is at least $\frac{1}{5}\binom{n}{4}$ (for $n\geq 5$) Nov 6 comment Prove that the number of pairs of edges that cross in a drawing of $K_n$ is at least $\frac{1}{5}\binom{n}{4}$ (for $n\geq 5$) @JaycobColeman good point, done. Nov 6 revised Prove that the number of pairs of edges that cross in a drawing of $K_n$ is at least $\frac{1}{5}\binom{n}{4}$ (for $n\geq 5$) added 54 characters in body Nov 6 asked Prove that the number of pairs of edges that cross in a drawing of $K_n$ is at least $\frac{1}{5}\binom{n}{4}$ (for $n\geq 5$) Oct 23 answered Proof by Induction for a recursive sequence and a formula Oct 20 answered What is that sign in the context of vectors? Oct 18 accepted Prove that flow is a linear combination of flow cycles and flow paths Oct 18 asked Prove for a connected graph $G=(V,E)$, $\kappa(G)=1+\min_{v\in V}\kappa(G-v)$ Oct 17 answered Covering a chess board with $2$ missing places with $31$ dominoes