Alexander Macfarlane | |
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| Born | 21 April 1851 Blairgowrie, Scotland |
| Died | 28 August 1913 (aged 62) Chatham, Ontario, Canada |
| Alma mater | University of Edinburgh |
| Known for | Scientific biographies Algebra of Physics |
| Spouse | Helen Swearingen |
| Scientific career | |
| Fields | Logic Physics Mathematics |
| Institutions | University of Texas Lehigh University |
| Doctoral advisor | Peter Guthrie Tait |
Alexander Macfarlane FRSE LLD (21 April 1851 – 28 August 1913) was a Scottish logician, physicist, and mathematician.