Mathematics
Free PNG images in the category “Mathematics”: 2 files with transparent background, no sign-up.
A black-line chart of small graphs built from dots and edges, each row labelled with a letter and index, and a lab sketch of gloved hands holding a glass slide beside a spray bottle and a roll of tape.
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Mathematics next to Geometry and Physics
Geometry has shapes and constructions of its own; Physics has forces and formulas. Mathematics covers the rest: number, graphs, tables, symbols and the diagrams that appear in proofs.
The graph table
These are Dynkin-style diagrams, the chains and branches used to classify algebraic structures. Pure line art on a transparent background, so it scales cleanly into a lecture handout or a thesis figure.
The glass slide scene
A flat, pastel illustration of a lab step: cleaning and taping a sample plate. It suits a methods section, a statistics course on experimental design or a science club worksheet.