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6
C
g
–geometricalmatrixofconstants
examplesofstiffmotions(allbeingnotdenotedinfigures):
O
α
e
–rotationoflineebydirectangle
α
T
we
–translationoflineebyvectorw
a(u)·p(u)–dot(inner)productofvectorsa(u)andp(u)
a(u)xp(u)oraxp–crossproductsofvectors:a(u)andp(u)oraandp
a
(u
)
=[x
h
(u),y
h
(u),z
h
(u)]–setofvectorsexpressingfunctionalrelations
correspondingtoaline
x
h
(u),y
h
(u),z
h
(u)–threefunctionswhosediversifiedvaluesrepresentmeasures
ofcomponentsofvariousvectors
p
=[l
p
,m
p
,n
p
]–vectorwhosecomponentsarel
p
,m
p
,n
p
l
p
,m
p
,n
p
–threeconstantsrepresentingthemeasuresofcomponentsofavector,
wherethesubscriptisanyletterornumber
d,|E
s
E
1
|,E
s
E
1
–possibledenotationsofthelengthoflinearsectionsorthe
distancesbetweentwoconsideredpoints
{
τ
ti
},{
τ
wj
},…–bundlesandofplanes
τ
ti
,
τ
wj
{t
i
},{w
j
},…–twofamiliesofrulingst
i
,w
j
