Invitation to Nonstandard Analysis (NSA)

• What is nonstandard analysis? (by P. Apps)
• Nonstandard Analysis -- from MathWorld
• Hyperreal Number -- from MathWorld
• Hyperfinite Set -- from MathWorld
• non-standard analysis (Everything2.com)
• The Home of Infinitesimals
• Nonstandard Analysis
• A Note on NSA (in Japanese) by Y. Hashimoto

leibniz@sun-inet.or.jp