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DTSTART;TZID=America/Toronto:20240306T143000
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URL:https://uwaterloo.ca/pure-mathematics/events/logic-seminar-60
SUMMARY:Logic Seminar
CLASS:PUBLIC
DESCRIPTION:CHRISTINE EAGLES\, DEPARTMENT OF PURE MATHEMATICS\, UNIVERSITY 
 OF\nWATERLOO\n\n\"SPLITTING THE DIFFERENTIAL LOGARITHM MAP USING GALOIS TH
 EORY\"\n\nAn ordinary algebraic differential equation is said to be intern
 al to\nthe constants if its general solution is obtained as a rational\nfu
 nction of finitely many of its solutions and finitely many constant\nterms
 . Such equations give rise to algebraic groups behaving as Galois\ngroups.
  In this talk I give a characterisation of when the pullback of\nthe diffe
 rential logarithm of an equation is internal to the constants\nwhen the Ga
 lois group is unipotent or a torus. This is joint work in\nprogress with 
 Leo Jimenez.\n\nMC 5479
DTSTAMP:20260505T221708Z
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