https://wikimd.org/index.php?action=history&feed=atom&title=Ab_initio Ab initio - Revision history 2026-05-14T03:46:46Z Revision history for this page on the wiki MediaWiki 1.44.2 https://wikimd.org/index.php?title=Ab_initio&diff=6529605&oldid=prev Prab at 18:24, 18 March 2025 2025-03-18T18:24:06Z <p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 18:24, 18 March 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l35">Line 35:</td> <td colspan="2" class="diff-lineno">Line 35:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; 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font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">__NOINDEX__</del></div></td><td colspan="2" class="diff-side-added"></td></tr> </table> Prab https://wikimd.org/index.php?title=Ab_initio&diff=6497448&oldid=prev Prab: CSV import 2025-03-17T03:44:37Z <p>CSV import</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 03:44, 17 March 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l35">Line 35:</td> <td colspan="2" class="diff-lineno">Line 35:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; 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color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Chemistry-stub}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Chemistry-stub}}</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>__notoc__</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>__notoc__</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{No image}}</ins></div></td></tr> </table> Prab https://wikimd.org/index.php?title=Ab_initio&diff=5763012&oldid=prev Kondreddy Naveen at 21:44, 10 May 2024 2024-05-10T21:44:56Z <p></p> <p><b>New page</b></p><div>&#039;&#039;&#039;Ab initio&#039;&#039;&#039; is a Latin term meaning &quot;from the beginning&quot;. In various fields, it is used to describe methods or approaches that are based on basic principles or theories, without relying on empirical data or previous knowledge. <br /> <br /> == Definition ==<br /> <br /> The term &#039;&#039;&#039;ab initio&#039;&#039;&#039; is derived from Latin, where it literally means &quot;from the beginning&quot;. It is used in several contexts, including law, physics, and computational chemistry, to denote methods or approaches that start from basic principles or theories, without relying on empirical data or previous knowledge.<br /> <br /> == Use in Law ==<br /> <br /> In [[law]], &#039;&#039;&#039;ab initio&#039;&#039;&#039; refers to something that has been in effect from the start. For example, if a contract is void &#039;&#039;&#039;ab initio&#039;&#039;&#039;, it is considered invalid from the outset, as if it had never existed. This term is often used in contract law and property law.<br /> <br /> == Use in Physics ==<br /> <br /> In [[physics]], &#039;&#039;&#039;ab initio&#039;&#039;&#039; methods are used in the field of quantum mechanics to solve the Schrödinger equation from first principles. These methods, which include Hartree-Fock and Density Functional Theory, do not rely on empirical data or approximations, but instead use the fundamental laws of physics to calculate properties of systems.<br /> <br /> == Use in Computational Chemistry ==<br /> <br /> In [[computational chemistry]], &#039;&#039;&#039;ab initio&#039;&#039;&#039; methods are used to predict the structures and properties of molecules. These methods, which include Gaussian and Møller-Plesset perturbation theory, use the principles of quantum mechanics to calculate the electronic structure of molecules from scratch, without relying on empirical data or approximations.<br /> <br /> == See Also ==<br /> <br /> * [[Hartree-Fock]]<br /> * [[Density Functional Theory]]<br /> * [[Gaussian (software)]]<br /> * [[Møller-Plesset perturbation theory]]<br /> <br /> [[Category:Latin phrases]]<br /> [[Category:Legal terminology]]<br /> [[Category:Quantum mechanics]]<br /> [[Category:Computational chemistry]]<br /> <br /> {{Latin phrases}}<br /> {{Quantum mechanics-stub}}<br /> {{Law-stub}}<br /> {{Chemistry-stub}}<br /> __notoc__</div> Kondreddy Naveen