what is the name and meaning of this symbol?

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Eliza
Eliza on 1 Mar 2018
Commented: Star Strider on 1 Mar 2018
what is the name and meaning of this symbol? after the arrow in the attached image

Answers (1)

Jan
Jan on 1 Mar 2018
This is the Greek uppercase psi. The meaning depends on the context. Of course you can call any function or variable "Psi". Actually you should find the definition in the surrounding text.
  2 Comments
Stephen23
Stephen23 on 1 Mar 2018
Edited: Stephen23 on 1 Mar 2018
It looks like a lowercase italic psi to me.

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