∴ is a mathematical symbol, which means that. The symbol "∴" is often used in mathematical problems, which is usually used in the process of solving problems and is easy to remember. The founders of ∵ (because) and ∴ (so) have two statements:

1 and 1659, the British mathematician Ryan first wrote Algebra.

2. 1659, Swiss mathematician Rahn wrote the book Dialect Algebra.

The invention and use of mathematical symbols are later than numbers, but their number exceeds numbers. There are more than 200 mathematical symbols commonly used in modern mathematics, and each symbol has an interesting experience. For example, "=" is an equal sign, "≈" is an approximate symbol, "≦" is an unequal sign and ">" is a greater than sign. "