Polish philosopher and logician (1890-1963)

<span class="mw-page-title-main">Kazimierz Ajdukiewicz</span>

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Kazimierz Ajdukiewicz

<p><b>Kazimierz Ajdukiewicz</b> (12 December 1890 – 12 April 1963) was a Polish <a href="/en/Philosopher" title="Philosopher" class="mw-redirect wl">philosopher</a> and <a href="/en/Logician" title="Logician" class="mw-redirect wl">logician</a>, a prominent figure in the <a href="/en/Lwów–Warsaw_school_of_logic" title="Lwów–Warsaw school of logic" class="mw-redirect wl">Lwów–Warsaw school of logic</a>. He originated many novel ideas in <a href="/en/Semantics" title="Semantics" class="wl">semantics</a>. Among these was <a href="/en/Categorial_grammar" title="Categorial grammar" class="wl">categorial grammar</a>, a highly flexible framework for the analysis of natural language syntax and (indirectly) semantics that remains a major influence on work in <a href="/en/Formal_linguistics" title="Formal linguistics" class="wl">formal linguistics</a>. Ajdukiewicz's fields of research were <a href="/en/Model_theory" title="Model theory" class="wl">model theory</a> and the <a href="/en/Philosophy_of_science" title="Philosophy of science" class="wl">philosophy of science</a>.</p>

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<style data-mw-deduplicate="TemplateStyles:r1066479718" typeof="mw:Extension/templatestyles mw:Transclusion">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}body.skin-minerva .mw-parser-output .infobox-header,body.skin-minerva .mw-parser-output .infobox-subheader,body.skin-minerva .mw-parser-output .infobox-above,body.skin-minerva .mw-parser-output .infobox-title,body.skin-minerva .mw-parser-output .infobox-image,body.skin-minerva .mw-parser-output .infobox-full-data,body.skin-minerva .mw-parser-output .infobox-below{text-align:center}</style><div class='mobile-collapse'><header class="mobile-collapse-header mobile-collapse-btn"><b>Quick facts: Kazimierz Ajdukiewicz, Born, Died, Nationalit...</b> <span class='arrow'>▼</span></header> <table class="infobox biography vcard mobile-collapse-element"><tbody><tr><th colspan="2" class="infobox-above" style="font-size:125%;"><div class="fn" style="display:inline">Kazimierz Ajdukiewicz</div></th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size"><a href="/en/File:Prof._Kazimierz_Ajdukiewicz.jpg" class="mw-file-description image media-thumb" data-hash="File:Prof._Kazimierz_Ajdukiewicz.jpg"><img loading="lazy" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Prof._Kazimierz_Ajdukiewicz.jpg/220px-Prof._Kazimierz_Ajdukiewicz.jpg" decoding="async" data-file-width="578" data-file-height="755" data-file-type="bitmap" height="287" width="220" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Prof._Kazimierz_Ajdukiewicz.jpg/330px-Prof._Kazimierz_Ajdukiewicz.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Prof._Kazimierz_Ajdukiewicz.jpg/440px-Prof._Kazimierz_Ajdukiewicz.jpg 2x" alt="Prof._Kazimierz_Ajdukiewicz.jpg"></a></span></td></tr><tr><th scope="row" class="infobox-label">Born</th><td class="infobox-data"><span style="display:none">(<span class="bday">1890-12-12</span>)</span>12 December 1890<br><div style="display:inline" class="birthplace"><a href="/en/Ternopil" title="Ternopil" class="wl">Ternopil</a>, <a href="/en/Kingdom_of_Galicia_and_Lodomeria" title="Kingdom of Galicia and Lodomeria" class="wl">Galicia</a> (modern day <a href="/en/Ukraine" title="Ukraine" class="wl">Ukraine</a>)</div></td></tr><tr><th scope="row" class="infobox-label">Died</th><td class="infobox-data">12 April 1963<span style="display:none">(1963-04-12)</span> (aged<span>&nbsp;</span>72)<br><div style="display:inline" class="deathplace"><a href="/en/Warsaw" title="Warsaw" class="wl">Warsaw</a>, <a href="/en/People's_Republic_of_Poland" title="People's Republic of Poland" class="mw-redirect wl">Poland</a></div></td></tr><tr><th scope="row" class="infobox-label">Nationality</th><td class="infobox-data category"><a href="/en/Poland" title="Poland" class="wl">Polish</a></td></tr><tr><th scope="row" class="infobox-label">Alma<span>&nbsp;</span>mater</th><td class="infobox-data"><a href="/en/University_of_Lwów" title="University of Lwów" class="mw-redirect wl">University of Lwów</a></td></tr><tr><td colspan="2" class="infobox-full-data"><b>Scientific career</b></td></tr><tr><th scope="row" class="infobox-label">Fields</th><td class="infobox-data category"><a href="/en/Logician" title="Logician" class="mw-redirect wl">Logician</a></td></tr><tr><th scope="row" class="infobox-label">Notable students</th><td class="infobox-data"><a href="/en/Mojżesz_Presburger" title="Mojżesz Presburger" class="wl">Mojżesz Presburger</a></td></tr><tr style="display:none"><td colspan="2">
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Kazimierz Ajdukiewicz was a Polish philosopher and logician, a prominent figure in the Lwów–Warsaw school of logic. He originated many novel ideas in semantics. Among these was categorial grammar, a highly flexible framework for the analysis of natural language syntax and semantics that remains a major influence on work in formal linguistics. Ajdukiewicz's fields of research were model theory and the philosophy of science. 