Mathematical Symbols

Mathematical Symbols is a clear reference to the symbols used in school and university maths. Every symbol is shown as a real Unicode character with its code point, its name, its meaning, a typeset example and how it is read aloud. What the app covers • Getting Started: how to read maths notation, a Symbol Finder with more than 300 entries, and look-alike symbols such as − and -, ∑ and Σ, ∈ and ε • Arithmetic and Equality: operations, roots, percent, equals and inequality signs, brackets and the order of operations • Algebra: powers, roots and logarithms, absolute value, floor and ceiling, functions, sums and products, divisibility and modular arithmetic • Geometry: lines, segments and rays, parallel and perpendicular, angles, degrees and radians, triangles, circles, congruence and similarity • Set Theory: elements and subsets, union, intersection, difference and complement with Venn diagrams, power sets and infinite sets • Logic: not, and, or, implication and equivalence with a truth table, quantifiers and proof symbols • Calculus and Analysis: limits, derivative notations, partial derivatives, gradient, integrals and asymptotic notation • Linear Algebra: vectors, norms, dot and cross products, matrices, transpose, inverse, determinant and eigenvalues • Probability and Statistics: probability rules, random variables and distributions, mean, standard deviation, hypothesis tests, factorials and combinations • Number Sets and Numerals: ℕ, ℤ, ℚ, ℝ and ℂ, interval notation, Roman numerals and digits in other scripts • Greek Letters: all 24 letters with pronunciation and common meanings, and their variant forms • Constants: π, e, the golden ratio, i, √2, Euler's constant and infinity, with values and explanations Who it is for Students at secondary school and university, teachers, and anyone who meets a symbol in a book or formula and wants to know what it means and how to say it. Features • Long tables have a filter box, so you can type a symbol or a word and find it at once • Search across all pages from the home screen • Formulas are typeset as text, so they stay sharp at any size • Original drawings: Venn diagrams, angles, parallel and perpendicular lines, number lines, graphs and more • Practice questions with answers you can reveal • Notation follows ISO 80000-2, with notes where books use different conventions • Works offline • Dark mode • Available in 8 languages: English, Español, Português, Français, Deutsch, العربية, हिन्दी and Bahasa Indonesia Mathematical Symbols is an independent study aid. Content is checked against the ISO 80000-2 standard, the Unicode code charts, OpenStax textbooks and the NIST Digital Library of Mathematical Functions.