Also I use the definition symbol "≡" to determine features. Easiest scenario is f(x) ≡ y. I'm working with it to point out a romance to uncover sums in place of stating it since the sum that we are deriving even so it can be used to state equivalence. But https://tarotista-en-madrid66342.bloggadores.com/35442730/a-review-of-por-qué-es-bueno-leer-el-tarot