Numbers & Math guides
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Numbers & Math
Floating-Point Errors
Where IEEE 754 bites — rounding, cancellation, infinities, NaN propagation, accumulation.
Numbers & Math
Floating-Point Formats
IEEE 754 and ML-specific float formats — bit layout, range, and precision.
Numbers & Math
Fraction to Decimal Chart
Inch fractions from 1/64 to 1" converted to decimal inches and millimetres. Includes common 1/8, 1/16, 1/32 shop fractions and decimal-inch ↔ mm lookup.
Numbers & Math
Geometry Formulas
Area, perimeter, surface area, and volume formulas for common 2D and 3D shapes.
Numbers & Math
Matrix Decomposition Methods
LU, QR, SVD, eigendecomposition, Cholesky — what each does and when to use it.
Numbers & Math
Matrix Operations Cheat Sheet
Matrix arithmetic rules, transpose, inverse, determinant, and key properties.
Numbers & Math
Statistical Correlation Table
Correlation coefficients — Pearson, Spearman, Kendall — with interpretation and caveats.
Numbers & Math
Statistical Distributions Reference
Common probability distributions — PDFs, means, variances, and typical uses.
Numbers & Math
Statistical Tests Reference
Which hypothesis test to use — t-test, chi-square, ANOVA, non-parametric alternatives.
Numbers & Math
Triangle Identities
Solve triangles — SSS, SAS, ASA, SSA. Laws of sines and cosines, area formulas.
Numbers & Math
Trigonometry Cheat Sheet
Core trig identities, ratios, unit circle values, and laws of sines and cosines.