-- card: 11884 from stack: in -- bmap block id: 11692 -- flags: 0000 -- background id: 2600 -- name: -- part 1 (field) -- low flags: 00 -- high flags: 0000 -- rect: left=39 top=27 right=60 bottom=464 -- title width / last selected line: 0 -- icon id / first selected line: 0 / 0 -- text alignment: 1 -- font id: 34 -- text size: 24 -- style flags: 17152 -- line height: 32 -- part name: -- part contents for card part 1 ----- text ----- Curry - Yorke -- part contents for background part 22 ----- text ----- [Springer Notes in Maths, v668, p48 (1977) ] Chaos may occur due to the destruction of the quasi-periodic 2-torus in a regime of frequency locking.