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| {{Infobox scientist
| | Hello, I'm Leanne, a 28 year old from Altglobsow, Germany.<br>My hobbies include (but are not limited to) Antiquing, Worldbuilding and watching Grey's Anatomy.<br><br>Feel free to visit my blog post ... [http://mabia.sk/rudimentary-aspects-bed-bugs-some-insights Rapid Advice In bed bugs - What's Required] |
| |name = Irving Stringham
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| |image =
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| |image_size =
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| |caption =
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| |birth_date = {{birth date|1847|12|10}}
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| |birth_place = [[Yorkshire, New York]], [[U.S.]]
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| |death_date = {{death date and age|1909|10|5|1847|12|10}}
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| |death_place = [[Berkeley, California]], [[U.S.]]
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| |residence =
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| |citizenship =
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| |nationality = [[United States|American]]
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| |ethnicity =
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| |field = [[Mathematics]]
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| |work_institutions = [[University of California at Berkeley]]
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| |alma_mater = [[Harvard College]] 1877 <br />[[Johns Hopkins University]] PhD 1880
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| |doctoral_advisor = [[James Joseph Sylvester]]
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| '''Washington 'Irving' Stringham''' (December 10, 1847 – October 5, 1909) was a "Professor of Mathematics and Sometime Dean in the University of California"<ref>Charles Smith, Irving Stringham, ''Elementary algebra for the use of schools and colleges'' 2nd ed, (The Macmillan Company, New York, 1904).</ref> born in [[Yorkshire, New York|Yorkshire]], [[New York]]. Stringham is perhaps most notable as the first person to denote the [[natural logarithm]] as <math>\ln(x)</math> where <math>x</math> is its argument. The use of <math>\ln(x)</math> in place of <math>\log_e(x)</math> is commonplace in [[calculator|digital calculators]] today.
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| <blockquote>
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| "In place of <math>^{e}\log</math> we shall henceforth use the shorter symbol <math>\ln</math>, made up of the initial letters of ''logarithm'' and of ''natural'' or ''Napierian''."<ref>Charles Smith, Irving Stringham, ''Elementary algebra for the use of schools and colleges'' 2nd ed, (The Macmillan Company, New York, 1904) p 437.</ref>
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| </blockquote>
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| Stringham graduated from [[Harvard College]] in 1877. He earned his PhD from [[Johns Hopkins University]] in 1880. He began his professorship in mathematics at [[University of California at Berkeley|Berkeley]] in 1882.<ref>"In Memoriam, Dean Stringham" ''University of California Chronicle'' Vol XII (University Press, Berkeley, 1909) pp 1–20.</ref> His PhD dissertation was titled ''Regular Figures in N-dimensional Space''<ref>W.I. Stringham "Regular Figures in N-dimensional Space" ''American Journal of Mathematics'' Vol 3 (1880) pp 1-15.</ref> under his advisor [[James Joseph Sylvester]].
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| ==Biographical==
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| Married to Martha Sherman Day and had a daughter, Martha Sherman Stringham, (March 5, 1891- August 7, 1967).
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| ==References==
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| <references/>
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| ==External links==
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| * {{MathGenealogy|32916}}
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| {{Authority control|VIAF=77090245}}
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| {{Persondata
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| |NAME=Stringham, Irving
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| |ALTERNATIVE NAMES=
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| |SHORT DESCRIPTION=American mathematician
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| |DATE OF BIRTH=December 10, 1847
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| |PLACE OF BIRTH=[[Yorkshire, New York]]
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| |DATE OF DEATH=October 5, 1909
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| |PLACE OF DEATH=[[Berkeley, California]], [[U.S.]]
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| }}
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| {{DEFAULTSORT:Stringham, Irving}}
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| [[Category:1847 births]]
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| [[Category:1909 deaths]]
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| [[Category:19th-century American mathematicians]]
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| [[Category:20th-century American mathematicians]]
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| [[Category:American mathematicians]]
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| [[Category:Harvard University alumni]]
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| [[Category:Johns Hopkins University alumni]]
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| [[Category:ICM 1900 Plenary and Invited Speakers]]
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Hello, I'm Leanne, a 28 year old from Altglobsow, Germany.
My hobbies include (but are not limited to) Antiquing, Worldbuilding and watching Grey's Anatomy.
Feel free to visit my blog post ... Rapid Advice In bed bugs - What's Required