Complex No. (1 Viewer)

[Lukybear]

In complex numbers there are the notations E which represent an element of. There is also C, which means contained in. What is the difference and in which cases must we use which?

 

[youngminii]

You don't have to use the notations at all, not required anymore.
I've never seen C. I always use E, in fact I'd advise you against using C as there is the notation C (with a little vertical line inside the C) that represents complex numbers. Might get confusing.

Oh and this isn't restricted to complex numbers.

 

[Revacious]

thats just mathematical notation.

Table of mathematical symbols - Wikipedia, the free encyclopedia