What does a tilde over a matrix mean?

What does a tilde over a matrix mean?

a tilde (~) denotes an outer matrix of the corresponding vector, that is, ˜a=[a×] If I am not mistaken this means to calculate the cross product of a and the vector following a. As an example, assuming both a and b are vectors, then ˜ab would be a×b.

What is tilde symbol used for?

This symbol (in US English) informally means “approximately”, “about”, or “around”, such as “~30 minutes before”, meaning “approximately 30 minutes before”.

What does ∼ mean in statistics?

As a general rule, the symbol ∼ can be read as “behaves like” or “behaves according to”. In Statistics, it is used to indicate that a variable follows a certain distribution. So, for example, X∼N(μ,σ2) can be read as “X behaves according to a Normal distribution”.

What does it mean when someone puts a tilde after a word?

What does it mean when someone puts a tilde after a word? The tilde sign generally means ‘about’ or ‘approximately’, and when used at the end of a sentence it’s intended to convey a cute warbling trail-off rather than an abrupt stop. Like the sort of sound an excited teenager would make.

When would you use a tilde?

In lexicography (a subject within linguistics) the tilde is used in dictionaries to indicate omission of an entry word. Informally, the symbol can be used to mean “approximately.” For example: “~30 minutes before sautéing the onions, chop the potatoes coarsely.”

What does a tilde mean in a text message?

The tilde sign generally means ‘about’ or ‘approximately’, and when used at the end of a sentence it’s intended to convey a cute warbling trail-off rather than an abrupt stop. Like the sort of sound an excited teenager would make.

What does or stand for in probability?

In probability, there’s a very important distinction between the words and and or. And means that the outcome has to satisfy both conditions at the same time. Or means that the outcome has to satisfy one condition, or the other condition, or both at the same time.