A

• Abel, Niels (1802-1829)
• Abel's test for series
• absolute convergence of series
• accumulation points
• accumulation points and bounded sets
• accumulation points and isolated points
• aleph null
• alternating harmonic series
• alternating series
• alternating series test
• approximating function by derivative
• Archimedes (287?-212 B.C.)
• Archimedien Property