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Neighborhood A neighborhood of a number a is any open interval containing a. One common notation for a neighborhood of a is {x: |x – a| < δ}. Using interval notation this would be (a – δ, a + δ).
See also Deleted neighborhood, set-builder notation, Greek alphabet, set
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15-jul-23
Mathwords: Terms and Formulas from Algebra I to Calculus written, illustrated, and webmastered by Bruce Simmons Copyright © 2000 by Bruce Simmons All rights reserved |