17 May 202217 May 2022Leen NoordzijLeave a Comment on Mijn geschiedenis van de haven van Pernis. 1942-1954, de haven, het water en de watersnood. Updated 2022-05-17, Foto’s toegevoegd, o.a. van de lagere school. Mijn geschiedenis van de haven van Pernis. 1942-1954, de haven, het water en de watersnood. Updated 2022-05-17, Foto’s toegevoegd, o.a. van de lagere school.
8 May 20228 May 2022Leen NoordzijLeave a Comment on De beginjaren van de THT. An experiment with Liberal Arts at Twente Institute of Technology. Mijn studie en promotie aan de THT 1964-1973. Updated 2022-05-08 De beginjaren van de THT. An experiment with Liberal Arts at Twente Institute of Technology. Mijn studie en promotie aan de THT 1964-1973. Updated 2022-05-08
22 Feb 202222 Feb 2022Leen NoordzijLeave a Comment on De Fermat’s Last Theorem, Pythagorean Triples and The Descente Infinie revisited In Search for the Margin of Diophantus 2022-02-22 Edited and additions(§5.2), typos De Fermat’s Last Theorem, Pythagorean Triples and The Descente Infinie revisited In Search for the Margin of Diophantus 2022-02-22 Edited and additions(§5.2), typos
29 Jan 2022Leen NoordzijLeave a Comment on Prime Numbers, Pythagorean Triples and Goldbach’s Conjecture Updated 2022-01-29 Edited, §5.2 Remark on Goldbach’s Conjecture Prime Numbers, Pythagorean Triples and Goldbach’s Conjecture Updated 2022-01-29 Edited, §5.2 Remark on Goldbach’s Conjecture
21 Jan 2022Leen NoordzijLeave a Comment on Innovation and Its Fallacies. Expect the improbable. A change from exnovation to innovation. Updated 2022-01-21 Prologue Serendipity Innovation and Its Fallacies. Expect the improbable. A change from exnovation to innovation. Updated 2022-01-21 Prologue Serendipity
2 Jan 2022Leen NoordzijLeave a Comment on Isoperimetric Inequality and the Isoepifaeic Inequality Updated 2022-01-02 footnote 2, page 31 Isoperimetric Inequality and the Isoepifaeic Inequality Updated 2022-01-02 footnote 2, page 31
4 Jul 20214 Jul 2021Leen NoordzijLeave a Comment on De Fermat and the method of ‘Descente infinie’ Updated 2021-07-04 §§ 3.1 and 4. De Fermat and the method of ‘Descente infinie’ Updated 2021-07-04 §§ 3.1 and 4.
22 Jun 202122 Jun 2021Leen NoordzijLeave a Comment on Innovation, Education, Research and Reengineering Updated and Edited 2021-06-22 Conclusions pages 10, 11 and footnote Innovation, Education, Research and Reengineering Updated and Edited 2021-06-22 Conclusions pages 10, 11 and footnote
2 Apr 20212 Apr 2021Leen NoordzijLeave a Comment on A History of Shipping and Propulsion Edited and Updated 2021-04-02 Youtube video’s added. A History of Shipping and Propulsion Edited and Updated 2021-04-02 Youtube video’s added.
27 Apr 2020Leen NoordzijLeave a Comment on Puzzles with my grandchildren Updated 2020-04-27 Water-lilies growing in a pond Puzzles with my grandchildren Updated 2020-04-27 Water-lilies growing in a pond