hy×

→

×

=

`

+

a

→

e×, e„×

gyw³

→

³

=

K

+

Z

→

hyw³, e¨w³

Avb›`

→

›`

=

b

+

`

→

wb›`v, we›`v

e„n¯cwZ

→

¯c

=

m

+

c

→

wb¯cwË, ¯ck©

cyi¯‹vi

→

¯‹

=

m

+

K

→

wZi¯‹vi, fv¯‹i

AvU©‡evW©

→

U©

=

i

+

U

→

kvU©, PvU©

civgk©

→

k©

=

©

+

k

→

ek©v, `k©K