Function Notation in Real Numbers: What Does it Mean?

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Discussion Overview

The discussion revolves around the interpretation of function notation involving real numbers, specifically focusing on mappings from ℝ^n to ℝ^m. Participants explore the meaning of these notations and the implications of Cartesian products in higher dimensions.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • Some participants describe functions as mappings from one set to another, specifically from Cartesian products of real numbers.
  • There is a query regarding the meaning of ℝ raised to the power of n, with a request for clarification on its implications.
  • One participant reiterates that ℝ raised to the power of 2 represents the Cartesian product ℝ × ℝ, and seeks to understand the generalization to ℝ raised to the power of n.
  • Another participant confirms that ℝ raised to the power of n refers to the product of n copies of ℝ.

Areas of Agreement / Disagreement

Participants express some agreement on the interpretation of ℝ^n as a Cartesian product, but there remains uncertainty regarding the broader implications and definitions, particularly in higher dimensions.

Contextual Notes

The discussion does not resolve the definitions or implications of the notation fully, and assumptions about the understanding of Cartesian products in higher dimensions are not explicitly stated.

Who May Find This Useful

Readers interested in mathematical notation, function theory, and the properties of real number mappings may find this discussion relevant.

HasuChObe
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[tex]f: ℝ^n→ℝ\qquad g: ℝ^n→ℝ^m[/tex]
 
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Mappings or functions from a set to another set, and the sets are cartesian products of R 1, n and m times respectively.
 
if R is raised to power 2, it means R X R and the cartesian product. what about R power n? Plz explain...
 
Last edited:
Akshay_Anti said:
if R is raised to power 2, it means R X R and the cartesian product. what about R power n? Plz explain...

The product of n copies of R, as dextercioby said.
 

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