What is grassman number?
Let θ be an anti-commuting Grassmann number (i.e. θ²=0), and let f(θ) be a function of θ.
The Taylor series of f(θ) contains only 2 terms
In general, the Taylor series of multivariable functions of Grassmann numbers always has a finite number of termspic.twitter.com/Zgty48YN7s
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See my previous tweet about it
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And integration of functions of Grassmann numbers acts just like differentiation! References: [1] – M. Stone, 𝘛𝘩𝘦 𝘗𝘩𝘺𝘴𝘪𝘤𝘴 𝘰𝘧 𝘘𝘶𝘢𝘯𝘵𝘶𝘮 𝘍𝘪𝘦𝘭𝘥𝘴, Chapter 14 (Springer, New York, 2000) [2] – A. Wipf, 𝘗𝘢𝘵𝘩 𝘐𝘯𝘵𝘦𝘨𝘳𝘢𝘭𝘴, Chapter 10 (unpublished)pic.twitter.com/SiDByYLHMf
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;-; this looks... way too wordy
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