Abstract
It is shown that assuming the existence of a suitable ring homomorphism is enough to get an algebraic presentation of nonstandard methods that is equivalent to the popular superstructure approach, including $\kappa$-saturation.
Citation
Vieri Benci. Mauro Di Nasso. "A ring homomorphism is enough to get nonstandard analysis." Bull. Belg. Math. Soc. Simon Stevin 10 (4) 481 - 490, December 2003. https://doi.org/10.36045/bbms/1070645796
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