Algebraic properties of external numbers
Neutrices and external numbers were proposed as models of orders of magnitude within nonstandard analysis. We show that the external numbers form a commutative regular semigroup for addition and that the external numbers which are not neutrices form a commutative regular semigroup for multiplication...
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| Format: | article |
| Language: | eng |
| Published: |
2012
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| Online Access: | http://hdl.handle.net/10174/3699 |
| Country: | Portugal |
| Oai: | oai:dspace.uevora.pt:10174/3699 |