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<url><loc>https://elliotmcguckenphysics.com/2026/04/30/the-double-completion-of-kleins-1872-erlangen-programme-via-the-mcgucken-principle-dx4-dtictwo-structurally-independent-routes-from-dx4-dtic-to-the-klein-pair-iso13/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: dx4/dt=ic : Ergo physics. QED</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-30T18:07:56+00:00</news:publication_date><news:title>The Double Completion of Klein’s 1872 Erlangen Programme via the McGucken Principle dx4/dt=ic: Two Structurally Independent Routes from dx4/dt=ic to the Klein Pair (ISO(1,3),SO+(1,3)) and Its Categorical Subsumption, with a Unification of Group Theory and Category Theory via the Physical McGucken Principle</news:title></news:news></url><url><loc>https://elliotmcguckenphysics.com/2026/04/30/the-double-completion-of-felix-kleins-erlangen-programme-via-the-mcgucken-principle-in-both-group-theory-and-category-theory-dx4-dtic-as-the-source-law-of-mathematical-physics-wi/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: dx4/dt=ic : Ergo physics. QED</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-30T17:57:32+00:00</news:publication_date><news:title>The Double Completion of Felix Klein’s Erlangen Programme via the McGucken Principle in Both Group Theory and Category Theory: dx4/dt=ic as the Source Law of Mathematical Physics, with a Unification of GT &#038; CT</news:title></news:news></url><url><loc>https://elliotmcguckenphysics.com/2026/04/29/the-mcgucken-space-and-mcgucken-operator-generated-by-dx4-dtic-simultaneous-space-operator-generation-and-the-source-structure-of-all-mathematical-physics-a-new-category-completes-the/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: dx4/dt=ic : Ergo physics. QED</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-29T20:53:52+00:00</news:publication_date><news:title>The McGucken Space and McGucken Operator Generated by dx4/dt=ic: Simultaneous Space-Operator Generation and the Source Structure of All Mathematical Physics — A New Category Completes the Erlangen Programme</news:title></news:news></url><url><loc>https://elliotmcguckenphysics.com/2026/04/29/the-mcgucken-operator-dm-the-source-operator-that-co-generates-space-dynamics-and-the-operator-hierarchy/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: dx4/dt=ic : Ergo physics. QED</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-29T19:45:37+00:00</news:publication_date><news:title>The McGucken Operator DM : The Simplest, Most Complete, and Most Powerful Source Operator in Physics: A Formal Theory of How dx4/dt=ic Co-Generates Space, Dynamics, Time Evolution, Wick Rotation, Lorentzian Wave Propagation, Schrödinger Evolution, Dirac Factorization, Gauge Covariance, Commutator Structure, and More</news:title></news:news></url><url><loc>https://elliotmcguckenphysics.com/2026/04/29/the-mcgucken-space-%e2%84%b3g-the-source-space-that-generates-spacetime-hilbert-space-and-the-physical-arena-hierarchy/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: dx4/dt=ic : Ergo physics. QED</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-29T19:40:15+00:00</news:publication_date><news:title>The McGucken Space ℳG : The Simplest, Most Complete, and Most Powerful Source Space in Physics: A Formal Theory of How dx4/dt=ic Generates Spacetime, Metric Structure, Hilbert Space, Phase Space, Spinor Space, Gauge-Bundle Space, Fock Space, Operator Algebras, and More</news:title></news:news></url></urlset>
