•Trigonometry
⦶(x) = rise of x︱⊖(x) = run of x︱⊘(x) = slope of x︱⦶⁻¹(x) = rise reciprocal of x︱⊖⁻¹(x) = run reciprocal of x︱⊘⁻¹(x) = slope reciprocal of x
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›10 Arithmatic
The study of numbers, especially the properties of the traditional operations on them—addition, subtraction, multiplication and division.
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›35 Linear Algebra
The branch of mathematics concerning linear equations, linear maps and their representations in vector spaces and through matrices.
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›70 Topology
The mathematical study of the properties that are preserved through deformations, twistings, and stretchings of objects
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