Every command, environment, and symbol belongs to one topic, named for what it does rather than the package that defines it. Each topic page lists its entries in one table, with their packages, renderer support, and how often they appear in corpus formulas.
Symbols
Greek letters54 symbolsGreek and variant Greek letters.Letter-like symbols61 symbolsLetter-like symbols such as \infty, \partial, and \hbar.Binary operators75 symbols · 1 commandBinary operators such as plus, times, and set operations.Relations103 symbolsEquality, order, and set relations.Negated relations58 symbols · 1 commandNegated relations such as \neq and \nsubseteq.Arrows64 symbols · 5 commandsArrows, harpoons, and maps.Big operators18 symbolsVariable-sized operators such as sums and integrals.Delimiters41 symbols · 27 commandsFences, sizing commands, and stretchy bars.Blackboard bold (bboldx)168 symbolsBlackboard-bold letters and delimiters from bboldx.Miscellaneous symbols24 symbols · 7 commandsDots, primes, suits, and other leftover symbols.
Structure
Fractions and roots21 commandsFractions, binomials, and roots.Accents45 commandsHats, bars, tildes, and other decorations.Functions and operators74 commandsNamed functions, operator names, and limits.Large operators5 commandsBig operators, sidesets, and limit placement.Matrices10 environments · 8 commandsMatrix environments and matrix-building commands.Alignment25 environmentsMulti-line equation, alignment, and cases environments.Labels and tags6 commandsLabels, references, and equation tags.
Type and space
physics package
Physics: quantities28 commandsAbsolute values, commutators, and automatic fences.Physics: vectors10 commandsBold vectors, nabla, and vector calculus.Physics: derivatives14 commandsDifferentials and ordinary, partial, or functional derivatives.Physics: bra-ket22 commandsDirac notation and related inner/outer products.Physics: matrices27 commandsPhysics-package matrix constructors.Physics: functions17 commandsPhysics-package named functions that are not in base.Physics: annotations24 commandsQuad-text helpers such as \qif and \qthen.