Events

03. June 2025, 16:00 until 16:00

VADOR Guest Lecture: On the composition of two linear projections

Lecture

Heinz Bauschke, University of British Columbia

Projection operators are fundamental algorithmic operators in Analysis and Optimization. It is well known that these operators are firmly nonexpansive; however, their composition is generally only averaged and no longer firmly nonexpansive. In this talk, we introduce the modulus of averagedness and provide an exact result for the composition of two linear projection operators. As a consequence, we deduce that the Ogura-Yamada bound for the modulus of the composition is sharp.

Calendar entry
Event location
Sem. R. DB gelb 04
1040 Wien
Wiedner Hauptstraße 8 E105-4
Organiser
VADOR
vador@tuwien.ac.at
Public
No
Entrance fee
No
Registration required
No