Also I use the definition image "≡" to outline features. Most basic case is f(x) ≡ y. I'm making use of it to state a relationship to locate sums rather than stating it because the sum that we are deriving however it can be employed to point out equivalence. But https://reidttplg.tokka-blog.com/36624620/the-por-qué-es-bueno-leer-el-tarot-diaries