Am a bit confused about the meaning of cardinality. If ## A \subseteq B ##, then is it necessarily the case that ## |A| \leq |B| ##? I am thinking that since ## A \subseteq B ##, an injection from A to B exists, hence its cardinality cannot be greater than that of B?
meaning fundamental rights of india union territories of india capitals of seven sisters of india most populated states in india biology microbiology ecology zoology photosynthesis formulas maths formulas algebra formulas trigonometry formulas geometry formulas cbse sample papers cbse sample papers for class ...