Symbols should be comprehensive, pronounced (homophonic) and meaningful. If possible, there should be a list to express the functions of symbols. It's better to have an attachment, so you don't have to bother looking for it.
Anonymous user
20 17- 12- 15
The sign of (1) quantity: I, 2+I, A, X, natural logarithm base E, pi ∏.
(2) Operation symbols: such as plus sign (+), minus sign (-), multiplication sign (× or), division sign (÷ or/), union of two sets (∩), intersection (∩), root sign () and logarithm (log, lg, ln).
(3) relational symbols: for example, = is an equal sign, ≈ or ≈ is an approximate symbol, ≠ is an unequal sign, > is a greater than sign, ≮≯∷+-×÷/∫∮∝∞∧.
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