Unsure of how this is read

  • #1
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Homework Statement


Hi, the problem is, I'm unsure of how this is read. The context is that I'm currently reading on group homomorphisms and they use this notation. I think it is also used in composition of functions, but I'm unsure of how it is read there as well.

h:X-->Y

So how would I say h:X-->Y?

Homework Equations


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The Attempt at a Solution


Searched for a significant time span.
 

Answers and Replies

  • #2
Stephen Tashi
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"h:X-->Y" means "h is a function with domain X and codomain Y"

People read this informally in various ways:

or "h is a function mapping X into Y"

or "h is a function from X into Y"

or "h maps X into Y"
 
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  • #3
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Thank you so much.
 
  • #4
HallsofIvy
Science Advisor
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Since you are "reading on group homomorphisms" you might interpret that as meaning "h is a homomorphism from group X to group Y".
 
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