Chordal Loewner equation 2026-09-24
For a capacity-parameterized locally growing hull family,where the continuous real function is the Loewner driving function.
Past exam of the mathematics course of the University of Cambridge 2024 iii Paper 203 1 d Solution Created 2026-09-24 Updated 2026-09-25
The parameterization in part (c) gives the exact self-similarityfor every . The Loewner local growth property supplies a continuous Loewner driving function . Under this scaling of the hulls, the deterministic scaling rule for the Chordal Loewner equation givesTaking and shows thatfor the real constant .
Past exam of the mathematics course of the University of Cambridge 2024 iii Paper 203 2 a Solution Created 2026-09-24 Updated 2026-09-25
For Schramm–Loewner evolution in , the Scaling invariance of SLE states that, for every ,has the same law as . The scaled Loewner driving function is . Since , the Brownian scaling identity proves the claim.
The Conformal Markov property of SLE states that, conditionally on the hull through time , the future hull mapped by is an independent in . More precisely,has driving function . The stationary increments and independent increments of Brownian motion show that is independent of and has the same law as . The deterministic correspondence between continuous drivers and Loewner chains completes the proof.