The Math Symbols from the Question about Union and Intersection The V symbols in the readers question are and which mean Logical Or and Logical And The is a capital Greek Lambda. Math symbols and definitions. The prime symbol double prime symbol triple prime symbol and quadruple prime symbol are used to designate units and for other purposes in mathematics science linguistics and music.
Here are the most common mathematical symbols.
Set subset union intersection element cardinality empty set naturalrealcomplex number set. ISO 31-11 Mathematical signs and symbols for use in physical sciences and technology Number Forms. The small or caret is available on most keyboards as shift-6. List of all mathematical symbols and signs - meaning and examples.