Mathematics
Articles about numbers, structures, logic and mathematical concepts.
Right angle
Right angle (90°) — definition, notation, tests and uses
Right triangle
Right-hand rule
Rijndael key schedule
Rijndael (AES) key schedule
Ring (mathematics)
Ring theory
Ring theory (abstract algebra)
RMS
RMS — common meanings, history, and notable uses
Robert F. Coleman
Roman numerals
Roman numerals: system, history, and modern uses
Root of a function
ROT13
ROT13 — simple substitution cipher and its uses
Rounding
Rounding: methods, purpose, and impact on numerical results
RSA algorithm
RSA algorithm: public-key encryption, key generation, and history
Ruler
Ruler (measuring instrument): types, history, and common uses
Russell's paradox
S
S (letter) — nineteenth letter of the English alphabet
Sampi
Sample size
Sample size (statistics): definition, determination, and practical guidance
Scalar
Scale (ratio)
Scatter graph
Scatter graph (scatter plot)
Scheduling (computing)
Scheduling (computing): concepts, types, and algorithms
Scheme (programming language)
Scientific notation
Scientific notation: definition, format, uses and examples
Second
Second (unit of time)
Second normal form
Second Normal Form (2NF): Definition, Criteria, and Practical Guide
Selection sort
Self-similarity
Semi-major and semi-minor axes
Semicircle
Semiprime number
Sequence
Sequence (ordered list of elements and mathematical concept)
An ordered list of items or events. In mathematics a sequence is a function with natural numbers as domain; types include finite/infinite, arithmetic/geometric, recurrent; importan
Series
Series (mathematical sums, convergence, and applications)
Set
Set theory
Seven Bridges of Königsberg
Sexagesimal
Sexagesimal (base 60) numeral system
SHA hash functions
SHA-1
SHA-1 (Secure Hash Algorithm 1)
Shape
Shape: definitions, classification, properties and applications
Shor's algorithm
Shor's algorithm: quantum integer factoring and cryptography impact
Short ton
Short ton: definition, conversions, history and uses
SI derived unit
Sicilian defence
Side
Side (geometry)
Siegfried Gottwald
Siegfried Gottwald (1943–2015), German mathematician and logician