General symbols used in Maths Table of general symbols with name and example Name Symbol Example Because ∵ ∵ a + b = c For all ∀ ∀ a Implies to ⇒ ⇒ 2 + 3 = 5 Infinity ∞ a = ∞ Therefore ∴ ∴ a + b = c There exists ∃ ∃ Download symbols PDF 27.5 KB