[A-Z Challenge] X

 

Unknown I am

Sign of danger

I can be; yet I am

Just another letter

Very popular in math

Popular as unknown

Yet I help define

Line, Circles and parabolas

Popularity in math

Made me unpopular

In literature and

In other worlds

I was for the abstruse

Not worthy of the

Simplicity and elegance

of literature;they said

I was confined forever

To the scribblings of scientists

In their little diaries;

How dull are those diaries!

Yet abstractness made me

An exotic

Exoticism came in vogue

And made me famous

Now I sit proudly

Outside those diaries

Generation - X, X-Factor

I am in the popular culture

Yet I am still a humble letter

Those Romans liked to use

In every business transaction

And maybe I wanted just that!

Quirks of Life starting with X is the letter 'X'. Reading on it, I found  it to be very fascinating as it has different origins and has been used differently in many cultures. This is part of April A-Z challenge details of which is present here.