Correct Writing of Mathematical Symbols in Tian Zi Lattice

The greater than sign, the less than sign and the equal sign are all written in the left half of Tian Zige. They are aligned up and down, occupying two grids, namely the upper left grid and the lower left grid.

"∞" is a similar symbol, "∑" is a complete equal sign, "∑" is a parallel symbol, "⊥" is a vertical symbol, "∞" is a proportional symbol (reciprocal relation can be used to express inverse ratio) and "∑" is a symbol.

"?" Contained in the symbol "?" It is an inclusive symbol, and "|" means "divisible" (for example, a|b means "A is divisible by B" and ||b means that R is the greatest power of A divisible by B), and any letter such as X and Y can represent an unknown number 2.

Operation symbol:

Such as plus sign (+), minus sign (-), multiplication sign (× or), division sign (÷ or/), union of two sets (∩), intersection (∩), root sign (√ ~), logarithm (log, lg, ln,

Relational symbols: For example, "=" is an equal sign, "√" is an approximate symbol (that is, approximately equal to), "≦" is an equal sign, and ""is a greater than sign.