\dd x \qc \dv{x} \qc \dv{f}{x} \qc \dv[n]{x} \qc \dv[n]{f}{x} \\ \pd x\qc \pdv{x} \qc \pdv{f}{x} \qc \pdv[n]{x} \qc \pdv[n]{f}{x} \qc \pdv{f}{x}{y}{z} \\ \qty[\qty(1-n)*\frac{1}{n}] \qc \qty{1+\frac{1}{n}} \qc \qty|1+\frac{1}{n}| \\ \bra{a} \qc \ket{b} \qc \expval{x} \qc \braket{a}{b} \qc \ketbra{a}{b} \qc \matrixel{a}{b}{c} \\ \mqty(a & b \\ c & d) \qc \mqty[a & b \\ c & d] \qc \mqty{a & b \\ c & d} \qc \mdet{a & b \\ c & d} \qc \mqty|a & b \\ c & d| \\ \mqty[\dmat{a,b,\cdots}] \qc \mqty[\admat{a,b,\cdots}] \qc \mqty[\imat{2}] \qc \mqty[\xmat{x}{3}{2}] \qc