Are $\varnothing$ and $\{\varnothing\}$ equal?
30660
Empty set does not belong to empty set
153083
Does the equal sign make a difference in brace initialization? eg. 'T a = {}' vs 'T a{}'
94741
Are all infinities equal?
100968
Why is $|e^{i \lambda z}| |e^{- \lambda y}|= |e^{- \lambda y}|$ here?
33542
When is $A- B = B- A$?
46613
What's the difference between $\equiv$ and $\leftrightarrow$ in a formal proof?
117131
Canonical Isomorphism Between $\mathbf{V}$ and $(\mathbf{V}^*)^*$
106830
are $f(f(x))=f(x)$ and $f(x)=x$ equivalent?
85770
What is the difference between ∀x(p(x) →q(x)) and ∀x(p(x) ∧q(x))?
5639
No \xrightrightarrow[a]{b}?
31846
Does $\neg(x > y)$ imply that $y \geq x$?
105367
Proving $||\vec{a}+\vec{b}|| = ||\vec{a}-\vec{b}|| \iff \vec{a} \perp \vec{b}$
4064
An equality involving the mean value property
22842
The Interpretation of $|\psi|^2$ and the No-Clone Theorem
150825
Is an empty set equal to another empty set?
128639
Homoskedasticity Assumption: Var(y|x)=Var(u|x)=constant?
130998
Is $\exists x \in A ~:~ P(x)$ the same as $\exists x ~:~ x \in A \implies P(x)$