Tham khảo Số_vô_tỉ

  1. ↑ The 15 Most Famous Transcendental Numbers. by Clifford A. Pickover. URL retrieved 24 October 2007.
  2. ↑ http://www.mathsisfun.com/irrational-numbers.html; URL retrieved 24 October 2007.
  3. ↑ Weisstein, Eric W., "Irrational Number" từ MathWorld.
  4. ↑ Cantor, Georg (1955) [1915]. Philip Jourdain, biên tập. Contributions to the Founding of the Theory of Transfinite Numbers. New York: Dover. ISBN 978-0-486-60045-1. 
  5. ↑ Kurt Von Fritz (1945). “The Discovery of Incommensurability by Hippasus of Metapontum”. The Annals of Mathematics. 
  6. ↑ James R. Choike (1980). “The Pentagram and the Discovery of an Irrational Number”. The Two-Year College Mathematics Journal. .
  7. ↑ Kline, M. (1990). Mathematical Thought from Ancient to Modern Times, Vol. 1. New York: Oxford University Press. (Original work published 1972). p.33.
  8. ↑ Kline 1990, p. 32.
  9. ↑ Kline 1990, p.34.
  10. ↑ Kline 1990, p.48.
  11. ↑ Kline 1990, p.49.
  12. ↑ Robert L. McCabe (1976). “Theodorus' Irrationality Proofs”. Mathematics Magazine. .
  13. ↑ Charles H. Edwards (1982). The historical development of the calculus. Springer.