- #1

mikeph

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x ∈ R ⊕ R

^{⊥}

R is a set I think, but I'm not sure what the perpendicular symbol means.

Also am I correct in thinking the circled plus means that x must be in either R or R

^{⊥}(but not both)?

Thanks

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- Thread starter mikeph
- Start date

- #1

mikeph

- 1,235

- 18

x ∈ R ⊕ R

R is a set I think, but I'm not sure what the perpendicular symbol means.

Also am I correct in thinking the circled plus means that x must be in either R or R

Thanks

- #2

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- #3

Mark44

Mentor

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It's usually read as "R perp".I'm looking at a condition in a maths paper that I don't understand, essentially it is:

x ∈ R ⊕ R^{⊥}

- #4

Vargo

- 350

- 1

x = a+b, where a belongs to R and b belongs to R perp.

http://en.wikipedia.org/wiki/Direct_sum_of_modules

- #5

HallsofIvy

Science Advisor

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