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alternate Y1,Y2 tweak
[lambda.git]
/
hints
/
assignment_4_hint_3_alternate_1.mdwn
diff --git
a/hints/assignment_4_hint_3_alternate_1.mdwn
b/hints/assignment_4_hint_3_alternate_1.mdwn
index
b0c0673
..
ca4f9f5
100644
(file)
--- a/
hints/assignment_4_hint_3_alternate_1.mdwn
+++ b/
hints/assignment_4_hint_3_alternate_1.mdwn
@@
-44,10
+44,13
@@
Alternate strategy for Y1, Y2
Or in Y1of3, Y2of3, Y3of3 form:
Or in Y1of3, Y2of3, Y3of3 form:
- let Yv = \ff. Y (\v g h. ff (
v g h) g h)
in
- let Yw = \ff gg. Y ( \w h. (\g. gg (Yv ff g h) g h) (
w
h)) in
+ let Yv = \ff. Y (\v g h. ff (
v g h) g h)
in
+ let Yw = \ff gg. Y ( \w h. (\g. gg (Yv ff g h) g h) (
w
h)) in
let Y3of3 = \ff gg hh. Y ( \h. (\g. hh (Yv ff g h) g h) (Yw ff gg h)) in
let Y2of3 = \ff gg hh. Yw ff gg (Y3of3 ff gg hh) in
let Y3of3 = \ff gg hh. Y ( \h. (\g. hh (Yv ff g h) g h) (Yw ff gg h)) in
let Y2of3 = \ff gg hh. Yw ff gg (Y3of3 ff gg hh) in
- let Y1of3 = \ff gg hh. Yv ff (Y2of3 ff gg hh) (Y3of3 ff gg hh) in
+ let Y1of3 = \ff gg hh. Yv ff (Y2of3 ff gg hh) (Y3of3 ff gg hh) in
+ let f = Y1of3 (\f g h. A) (\f g h. B) (\f g h. C) in
+ let g = Y2of3 (\f g h. A) (\f g h. B) (\f g h. C) in
+ let h = Y3of3 (\f g h. A) (\f g h. B) (\f g h. C) in
D
D