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margin:10px;"><a class="nohover" href="/wiki/Privacy#Open"><img src="/images/icons/privacy60.png.pagespeed.ce.40ChhYgHYM.png" title="Privacy Level: Open" alt="Privacy Level: Open (White)" width="60" height="60" border="0"></a> </span> <h1> <span itemprop="name">Hermann G眉nther Grassmann</span> (abt. 1809 - 1877) </h1> </div> </div>  </div> <div class="container full-width"> <div id="ancestorTreeContainer" style="display:none;"></div> </div> <div id="content" class="container"> <div class="sixteen columns"> <div id="descendantsContainer" style="display:none;"></div> </div> <div class="ten columns"> <div class="VITALS"><span class="large"> <strong><span itemprop="givenName">Hermann G眉nther</span></strong> <meta itemprop="familyName" content="Grassmann"/> <strong><a href="/genealogy/GRASSMANN" title="Click here for the surname index page">Grassmann</a></strong> </span></div> <div class="VITALS">Born <strong>about <time itemprop="birthDate" datetime="1809-04-15">15 Apr 1809</time></strong> in <strong><span itemprop="birthPlace" itemscope itemtype="https://schema.org/Place"><span itemprop="name">Stettin, Pommern, Preu脽en</span></span></strong><a href="https://maps.google.com/maps?q=Stettin, Pommern, Preu脽en" target="_map"><img src="/images/icons/map.gif.pagespeed.ce.dRGS_qcAFb.gif" border="0" width="12" height="11" alt="map"></a></div> <span data-mid="31209218" class="showHideTree button small" style="float:right; clear:right; margin-left:5px; padding:3px;" title="Ancestors in a pedigree-style family tree chart">Ancestors <img src="/images/icons/pedigree.gif.pagespeed.ce.4kSwuvQoBH.gif" border="0" width="8" height="11" alt="ancestors"></span> <div class="VITALS">Son<meta itemprop="gender" content="male"/> of <span itemprop="parent" itemscope itemtype="http://schema.org/Person"><a href="/wiki/Grassmann-67" itemprop="url" title="Father: b. 19 Jun 1779 Greifenhagen, Pomerania, Prussia, Germany son of &nearr; Gottfried Rudolph Grassmann &searr; [unknown paternal grandmother]"><span itemprop="name">Justus G眉nther Grassmann</span></a></span> and <span itemprop="parent" itemscope itemtype="http://schema.org/Person"><a href="/wiki/Medenwaldt-4" itemprop="url" title="Mother: b. 30 Oct 1785 Klebow, Greifenhagen, Pomerania, Prussia, Germany daughter of &nearr; [unknown maternal grandfather] &searr; [unknown maternal grandmother]"><span itemprop="name">Johanne Friederike Louise Medenwaldt</span></a></span> </div>  <div class="VITALS">[sibling(s) unknown]</div> <div class="VITALS">Husband of <span itemprop="spouse" itemscope itemtype="https://schema.org/Person"><a href="/wiki/Knappe-32" itemprop="url" title="wife b. 1824-00-00 Alt Storkow, Saatzig, Pomerania, Prussia, Germany"><span itemprop="name"><strong>Maria Theresia (Knappe) Grassmann</strong></span></a></span> — married [date unknown] [location unknown] </div>  <div class="VITALS">Father of <span itemprop="children" itemscope itemtype="https://schema.org/Person"><a href="/wiki/Grassmann-68" itemprop="url" title="Son: b. 8 May 1857 Stettin, Randow, Pomerania, Prussia, Germany "><span itemprop="name">Hermann Ernst Grassmann</span></a></span>, <span itemprop="children" itemscope itemtype="https://schema.org/Person"><a href="/wiki/Grassmann-75" itemprop="url" title="Son: b. Dec 1859 Germany "><span itemprop="name">Carl Justus Grassmann</span></a></span> and <span itemprop="children" itemscope itemtype="https://schema.org/Person"><a href="/wiki/Grassmann-76" itemprop="url" title="Son: b. Feb 1863 Germany "><span itemprop="name">Felix Grassmann</span></a></span> </div> <div class="VITALS">Died <strong><time itemprop="deathDate" datetime="1877-09-26">26 Sep 1877</time></strong> <span title="Born 215 years ago; died at about age 68">at about age 68</span> in <strong><span itemprop="deathPlace" itemscope itemtype="https://schema.org/Place"><span itemprop="name">Stettin, Randow, Pommern, Preu脽en, Deutsches Reich</span></span></strong><a href="https://maps.google.com/maps?q=Stettin, Randow, Pommern, Preu脽en, Deutsches Reich" target="_map"><img src="/images/icons/map.gif.pagespeed.ce.dRGS_qcAFb.gif" border="0" width="12" height="11" alt="map"></a> </div> <div class="SMALL" style="background-color:#ffe183;"> <span class="problemQuestionLink button small" data-mnamedb="Grassmann-66" style="float:right; clear:right; margin:2px; padding:3px;" title="Open Problems and Questions Guide">Problems/Questions</span> <span title="The manager cares for the profile and leads the collaboration">Profile manager</span>: <a href="/wiki/Greer-6444" title="Click to visit Mike's WikiTree profile">Mike Greer</a> <a href="#" class="privateMessageLink" data-who="29846851" data-ref="34336509" rel="nofollow" title="Send a private message to Mike about this profile"><img src="/images/icons/mail.gif.pagespeed.ce.Q4d4kzofWu.gif" border="0" width="15" height="11" alt="private message"/></a> [<a href="#" class="privateMessageLink" data-who="29846851" data-ref="34336509" rel="nofollow" title="Send a private message to Mike about this profile">send private message</a>] </div> <div class="SMALL" style="background-color:#e1efbb;">Profile last modified <time itemprop="modifiedDate" datetime="2022-12-28">28 Dec 2022</time> | Created 24 Jul 2021</div><div class="SMALL" style="background-color:#eee;">This page has been accessed 542 times.</div> <div style="clear:both;"></div> <a name="Biography"></a><h2> <span class="mw-headline"> Biography </span></h2><div style="width:250px; min-height:50px; float:right; clear:right; display: flex; align-items: center; margin:2px 2px 2px 20px; border-style: solid; border-width: 1px; border-color: #ccc; box-shadow: 1px 1px 2px #888888;"><div style="display: flex; align-items=stretch;"><div style="min-width:50px; margin:0px 5px 0px 2px; display: flex; flex-direction: column; justify-content: space-around;"><a href="/wiki/Project:Notables"><img alt="Notables Project" src="/photo.php/a/a2/WikiTree_Image_Library-37.png" width="50" height="50" border="0" class="scale-with-grid"/></a></div></div><div class="SMALL">Hermann G眉nther Grassmann is Notable.</div></div> <p>Hermann was born about 1809. He passed away in 1877. He was a German polymath, known in his day as a linguist and now also as a mathematician. He was also a physicist, general scholar, and publisher. His mathematical work was little noted until he was in his sixties. In his work, Die lineale Ausdehnungslehre, ein neuer Zweig der Mathematik, which must be considered as a masterpiece of originality, he developed the idea of an algebra in which the symbols representing geometric entities such as points, lines and planes, are manipulated using certain rules. He represented subspaces of a space by coordinates leading to point mapping of an algebraic manifold now called the Grassmannian. Grassmann invented what is now called exterior algebra. This was joined to <a href="/wiki/Hamilton-26483" title="Hamilton-26483">Hamilton's</a> quaternions by <a href="/wiki/Clifford-4718" title="Clifford-4718">Clifford</a> in 1878. Grassmann's mathematical methods were slow to be adopted but eventually they inspired the work of <a href="/wiki/Cartan-9" title="Cartan-9">脡lie Cartan</a> and have since been used in studying differential forms and their application to analysis and geometry. Other who were directly influenced included Hankel, <a href="/wiki/Peano-1" title="Peano-1">Peano</a>, <a href="/wiki/Whitehead-3210" title="Whitehead-3210">Whitehead</a>, and <a href="/wiki/Klein-6684" title="Klein-6684">Klein</a>. Much of Peano's contributions were, as he acknowledges himself, based on the ideas of Grassmann. He was an autodidactic polymath. He modified <a href="/wiki/Newton-17" title="Newton-17">Newton鈥檚</a> theory of colors, he wrote treatises on electrodynamics and the theory of tides, and he was the first to provide a translation of the Rig Veda from Sanskrit into a European language. </p> <a name="Sources"></a><h2> <span class="mw-headline"> Sources </span></h2> <ul><li> Wikipedia: <a href="http://en.wikipedia.org/wiki/Hermann_Grassmann" class="extiw" title="wikipedia:Hermann_Grassmann">Hermann Grassmann</a> </li><li> Wikidata: <a href="https://www.wikidata.org/wiki/Q77219" class="external text" title="https://www.wikidata.org/wiki/Q77219" rel="nofollow">Item Q77219</a>, <a href="https://www.wikidata.org/wiki/Special:GoToLinkedPage/en/Q77219" class="external text" title="https://www.wikidata.org/wiki/Special:GoToLinkedPage/en/Q77219" rel="nofollow">en:Wikipedia</a> <a href="https://www.wikitree.com/wiki/Help:Wikidata" class="external text" title="https://www.wikitree.com/wiki/Help:Wikidata" rel="nofollow"><img src="https://www.wikitree.com/images/icons/help.gif.pagespeed.ce.1TvA_97yy8.gif" alt="help.gif" class="scale-with-grid"/></a> </li><li> <a href="https://mathshistory.st-andrews.ac.uk/Biographies/Grassmann/" class="external free" title="https://mathshistory.st-andrews.ac.uk/Biographies/Grassmann/" rel="nofollow">https://mathshistory.st-andrews.ac.uk/Biographies/Grassmann/</a> </li><li> <a href="https://www.maa.org/press/maa-reviews/hermann-gra-mann-biography" class="external free" title="https://www.maa.org/press/maa-reviews/hermann-gra-mann-biography" rel="nofollow">https://www.maa.org/press/maa-reviews/hermann-gra-mann-biography</a> </li><li> "Deutschland, ausgew盲hlte evangelische Kirchenb眉cher 1500-1971," database, FamilySearch (<a href="https://familysearch.org/ark:/61903/1:1:QP22-38QK" class="external free" title="https://familysearch.org/ark:/61903/1:1:QP22-38QK" rel="nofollow">https://familysearch.org/ark:/61903/1:1:QP22-38QK</a> : 28 March 2020), Hermann G眉nther Gra脽mann, 1 May 1809; images digitized and records extracted by Ancestry; citing Baptism, Stettin, Pommern, Preu脽en, Deutschland, Szczecin, German Lutheran Collection, various parishes, Germany. </li><li> "Deutschland, ausgew盲hlte evangelische Kirchenb眉cher 1500-1971," database, FamilySearch (<a href="https://familysearch.org/ark:/61903/1:1:QPK6-DLY5" class="external free" title="https://familysearch.org/ark:/61903/1:1:QPK6-DLY5" rel="nofollow">https://familysearch.org/ark:/61903/1:1:QPK6-DLY5</a> : 25 March 2020), Hermann G眉nther Grassmann, 1849; images digitized and records extracted by Ancestry; citing Marriage, Stettin, Pommern, Preu脽en, Deutschland, Szczecin, German Lutheran Collection, various parishes, Germany. </li></ul>  <br/><br/> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-5983849578006601" crossorigin="anonymous"></script>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-5983849578006601" data-ad-slot="1783638731" data-ad-format="auto" data-full-width-responsive="true"> </ins> <script>(adsbygoogle=window.adsbygoogle||[]).push({});</script> <br/><br/> </div> <div class="six columns"> <div class="box rounded row"> Is Hermann G眉nther your ancestor? 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