kronecker delta 問題. 考試. 2020年3月11日21:08. 請問大師們要如何證明這個等式我太遜了網路上都沒找到合理的解釋獻上無盡誠意的謝謝😢. ... <看更多>

... in sympy, but I can't seem to get it to simplify any contractions of tensors against the kronecker delta, i.e. with the minimal example: ... <看更多>

If you are dealing with spacetime indices (i.e. tensors over the spacetime), then symbols like δab or δab don't make sense. If you lower an index of δab you ... ... <看更多>

Evaluate the Kronecker delta. Contribute to stdlib-js/math-base-special-kronecker-delta development by creating an account on GitHub. ... <看更多>