What is the meaning of symbols: $\Omega$ is $C^2$ and $u(t,x) \in L^p(0,T;L^q(\mathbb{R}^n))$
75764
Regularity of a domain - definition
91059
Why is $\frac{d^n}{dx^n}(y(x))$ the notation for the $n$th derivative of $y(x)$, instead of $\frac{d^n}{d^nx}(y(x))$?
86623
Why is $B^TB+\lambda\Omega$ positive definite?
15170
Legendre symbol, second supplementary law
84984
What does $\partial_{\mu}$ mean?
158558
what does ∇ (upside down triangle) symbol mean in this problem
95226
Laplace operator's interpretation
93806
$\|f\|_{L^{p}}=\sup\left\{\int_{{\bf R}^{n}}|f(x)g(x)|~dx:\|g\|_{L^{q}}\le1\right\}$
77891
$(U\circ T)^{*} = T^{*}\circ U^{*}$
123075
What does the colon in Tikz coordinates mean?
33278
$\delta$ differential notation
21881
Prove that $\forall\alpha\geq\omega$, $|L_\alpha|=|\alpha|$ without AC
36990
Notation of the second derivative - Where does the d go?
73826
Interior product (contraction) symbol
89223
What does the symbol $\lll$ mean?
71725
$\mathcal N (A):=\mathcal P(A)\setminus\{\varnothing\}$ notation
12458
Absolute Value Symbols