WOLFRAM
|
DEMONSTRATIONS PROJECT
Cross-Cap Surface and Variations
a
1
b
2
c
1
d
2
W
i
t
h
a
=
1
,
b
=
2
,
c
=
1
,
a
n
d
d
=
2
,
t
h
i
s
D
e
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t
r
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n
s
h
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w
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s
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.
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a
,
b
,
c
,
d
d
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s
t
o
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s
t
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e
f
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g
u
r
e
.
