Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
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#1 2009-02-10 10:53:10
- JaneFairfax
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- Registered: 2007-02-23
- Posts: 6,868
My own notation for the non-negative reals, rationals and integers
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#2 2009-02-10 12:19:56
- George,Y
- Member
- Registered: 2006-03-12
- Posts: 1,379
Re: My own notation for the non-negative reals, rationals and integers
Howabout
Q-(Q-)
Last edited by George,Y (2009-02-10 12:20:38)
X'(y-Xβ)=0
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