pi, 3.14159 ) # math.isclose doesn't have a third argument for tolerance, so this is falseįrom numpy.testing import assert_almost_equal assert_almost_equal ( math. := is for definition (A is defined as B).≈ is for approximately equal to ( π ≈ 3.14159).≠ is for inequality (value are not the same).= is for equality (values are the same).There are a number of symbols resembling the equals sign =. TheĬonvention is import numpy as np, so when you see np.something you know that Slightly different python syntax means different speeds at large input. This will be important in our vectors and matrices section, because Think of math in python as two languages sharing a namespace, with special Interpreted as a domain specific language (DSL). Numpy is a powerful array programming library, which in python can be This will also be the format of this guide. θ - italic lowercase Greek letters for constants and special variables (e.g.A - bold uppercase letters for matrices (e.g.x - bold lowercase letters for vectors (e.g.s - italic lowercase letters for scalars (e.g.However, in some of the literature you may find variable names to follow a pattern like so: There are a variety of naming conventions depending on the context and field of study, and they are not always consistent. For more details on why this may be a problem, see Robust Arithmetic Notes by Mikola Lysenko. In some cases, real-world references (blog posts, publications, etc) will be cited to demonstrate how a symbol might appear in the wild.įor a more complete list, refer to Wikipedia - List of Mathematical Symbols.įor simplicity, many of the code examples here operate on floating point values and are not numerically robust. This guide may not cover all uses of a symbol. Mathematical symbols can mean different things depending on the author, context and the field of study (linear algebra, set theory, etc). Programming is just for your reference, not a required component. Jump to: The Greek Alphabet (English pronunciation for math & science) / Common math notations with Python examplesĬommon math notations with Python examplesĪdapted from math-as-code. Before week of Reading materials | Log reading progress ("reading_log")
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