It will likely never be known. However, the first appearance was in the book authored from the papers of Thomas Harriot entitled The Artis Analyticae Praxis ad Aequationes Algebraicas Resolvendas (Analytical Arts Applied to Solving Algebraic Equations) published 1631 after his death in 1621. It was his last will to have his work published. His papers are no longer in existence so the safest answer would be to say it was Thomas Harriot or one of the persons that took on the task of publishing such as Walter Warner. It was said that while surveying in North America Harriot saw a symbol on a Native American similar to a greater than and less than symbol transposed and turned 90 degrees.
Your best bet is to invent a time machine. Come pick me up before you go.
The "is greater than" and "is less than" symbols are the relations of an equality. this is the greater than symbol > this is the less than symbol <
Is < Less than or Greater than or > Greater than or Less than
< means less than > means greater than
> greater than < less than = equal to
The greater than symbol is ">" and the less than symbol is "<", without the quotes.
< > = Greater than , less than and equal too
> is greater than and < is less than (EXAMPLE: 8 > 3 and 3 < 8)
They are just called greater than< and less than>
Symbols 'Greater than' is > 'Less then' is < 'Equals' is = If a value is quoted as ' less /greater than or equals' then the symbol(s) is '='
They are: > means greater than and < means less than
Symbols= greater than (>), less than (<), and equal to (=)
Greater than: > Lesser than: < Example: 10 > 2 (ten is greater than two), 2 < 10 (two is less than ten).