# Omega

less info
reputation
1515
bio website location age 19 member for 3 years, 1 month seen Feb 23 at 3:15 profile views 170

# 338 Actions

 Dec6 asked If $aRb \land bRc$ never occurs, is a relation considered transitive? Dec6 asked What is $D$ in $G \cap G^{-1} \subseteq D$? Dec5 accepted Why is the composition of relations $R$ and $S$ written $S \circ R$ instead of $R \circ S$? Dec5 asked Why is the composition of relations $R$ and $S$ written $S \circ R$ instead of $R \circ S$? Dec4 accepted How to prove $A\cap B \subseteq \overline{A \triangle B}$ Dec4 accepted Is a contradiction enough to prove a set equality to $\varnothing$? Dec4 asked Is a contradiction enough to prove a set equality to $\varnothing$? Dec4 revised How to prove $A\cap B \subseteq \overline{A \triangle B}$ edited body Dec4 comment How to prove $A\cap B \subseteq \overline{A \triangle B}$ Woops, actually it was an error while translating from paper. Thanks! Fixing now... Dec4 asked How to prove $A\cap B \subseteq \overline{A \triangle B}$ Dec4 accepted When would I NOT use a double implication when proving equalities between sets? Dec4 asked When would I NOT use a double implication when proving equalities between sets? Dec3 accepted Are these two venn diagrams valid for $(A-B)\cup (B\cap C)$? Dec3 comment Are these two venn diagrams valid for $(A-B)\cup (B\cap C)$? Wait, if the element could be in both at the same time, the second drawing would make no sense, or would it? I mean, since the two red areas are visually separated, it would be impossible for an element to be in both, no? Dec3 asked Are these two venn diagrams valid for $(A-B)\cup (B\cap C)$? Dec2 accepted Should I perform a disjunctive syllogism directly on three expressions simultaneously? Dec2 asked Should I perform a disjunctive syllogism directly on three expressions simultaneously? Dec1 revised How to “make up a formula” of a sum? $1+\cdots+n$ instrad of $1+...+n$ Dec1 suggested suggested edit on How to “make up a formula” of a sum? Dec1 revised How to “make up a formula” of a sum? deleted 1 characters in body