I am aware of coffin/Q- corner and low & high speed buffet/stall
Ahhh the coffin corner myth in transport category aircraft comes again...
but would really appreciate an explanation of the physics with reference to IAS/EAS/TAS/Mach behind why, as you climb, the low-speed stall speed increases and the high-speed stall speed decreases
Seems like someone threw away his ATPL books and shouldnt have.