Quick question regarding general solutions of trigonometric functions

[Whatlol]

when you are stating the general solutions, they always write where n is all elements of Z or J. What does Z and J stand for, im guessing its positive numbers or something.

thanks.

[the.watchman]

Integers, can be negative also

[superflya]

denotes integers, which are all positive and negative natural numbers including 0 e.g -2,-5, 8

[Whatlol]

So is J all positive integers?

[98.40_for_sure]

Z (older textbooks use J) represent ALL the whole numbers, 0 included ie. all positive and negative.
so i guess your question is J = Z? it is. i would use Z in exams though

EDIT: if you want to be specific and ensure examiners don't get confused, you can always use words to explain.
eg. J, where J is an integer
or you can define the domain such as Z+ for positive integers

[Whatlol]

Z (older textbooks use J) represent ALL the whole numbers, 0 included ie. all positive and negative.
so i guess your question is J = Z? it is. i would use Z in exams though

oh ok, i kept getting confused when exams have J and then sometimes Z and i thought that there was a difference.
thanks for clearing that up (=