Why is "A only if B" equivalent to "(not A) or B"?
15504
In classical logic, why is $(p\Rightarrow q)$ True if $p$ is False and $q$ is True?
17532
Why does Simplify[b-a] give -a+b and not b-a?
17299
Conditional sentences not starting with "if"
86355
?: ternary conditional operator behaviour when leaving one expression empty
83392
Why is "if not someobj:" better than "if someobj == None:" in Python?
39174
Why doesn't Java have compound assignment versions of the conditional-and and conditional-or operators? (&&=, ||=)
17078
if(false==condition). Why?
128255
Empty Strings: Why or when is '' equal to ' '?
12091
Are if else statement equivalent to logical and && or || and where should I prefer one over the other?
20755
As a(n) noun vs as only
38639
Does the position of "only" give a different meaning to the sentence?
18051
Negation of 2 things: "and" or "or"?
151917
Difference between "not a", "no" and "not any"
3941
What's the difference between ".equals" and "=="?
48614
Why is "$P \Rightarrow Q$" equivalent to "$\neg Q \Rightarrow \neg P$"?
121601
Difference between the use of "a" and "any" in these examples?
6935
What's the difference between "either" and "neither"?