102: "From a logical point of view, this is unsatisfactory at the present stage because we have not yet discussed the concept of arc length | Iris Runge: A Life at the Crossroads of Mathematics, Science, and Industry |
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Calculus is the study of change—how things change, and how quickly they change |

Out of Their Minds: The Lives and Discoveries of 15 Great Computer Scientists.

2- معجم الرياضيات: مصطلحات وتعاريف الرياضيات
- " This question was inspired by Eugene Wigner's paper "The Unreasonable Effectiveness of Mathematics in the Natural Sciences"
- ط (رياضيات)
- Dehaene, Stanislas; Dehaene-Lambertz, Ghislaine; Cohen, Laurent Aug 1998
- قانون محيط المستطيل
- Brussels: IREG Observatory on Academic Ranking and Excellence

16: "By encryptedness, I mean that one symbol can stand for a number of different operations or ideas, just as the multiplication sign symbolizes repeated addition | ; Askey, Richard; Roy, Ranjan 1999 |
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Shasha, Dennis Elliot; Lazere, Cathy A |

- بحث عن الدائرة ومحيطها ونظريتها في الرياضيات
- American Mathematical Society 1991 reprint
- معجم الرياضيات: مصطلحات وتعاريف الرياضيات
- "The method of 'postulating' what we want has many advantages; they are the same as the advantages of theft over honest toil
- الدائرة
- 4 "A few complain that the computer program can't be verified properly", in reference to the Haken—Apple proof of the Four Color Theorem