The term aleph null was coined by Georg Cantor in late 19th Century. It was used to represent the smallest transfinite number: a number which represented the cardinality of a set which was countably infinite: that is, a set whose elements could be put into 1-to-1 correspondence with the set of positive integers.
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Nil, nought, none, null.
The term is null set, also known as the "empty set", and it contains no elements (numbers), represented by {} or ∅.
A null angle is an angle that measures zero degrees, meaning it's as exciting as watching paint dry. It's basically a line pretending to be an angle, like a party pooper in the world of geometry. So, if you're looking for some action, you won't find it with a null angle.
he invented the term genius.
The term hypothesis is used in science and statistics. I have included two links related to the these terms.In statistics, the null and alternative hypothesis are mathematical statements used in statistical decision making. An example of a null hypothesis is the mean of the population from which a sample was obtained is equal to 10. The mean of the data is sufficiently different from 10 can be used to reject the null hypothesis.As used in science, hypothesis is the initial idea suggested by observation or preliminary experimentation. See related links.