9) Gauss’s Theorem Egregium Flashcards

1
Q

The Gaussian curvature of a surface depends only on

A
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2
Q

Smooth orthonormal basis of tangent plane?
Use to form basis of R^3

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3
Q

Form partial derivatives of smooth orthonormal basis of R^3

A

Where e’ and e’’ are smooth functions of surface parameters (u,v) where N = e’ X e’’ (cross product)

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4
Q

Using smooth orthonormal basis of R^3 show that

A

Follows immediately from (below) since e’ , e” and N are perpendicular unit vectors

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5
Q

Using smooth orthonormal basis of R^3 show that

A

(1) is the linear combinations of partial derivatives of orthonormal bases elements

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6
Q

Using smooth orthonormal basis of R^3 show that

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7
Q

Use (below) to prove Gauss’s theorem egregum

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8
Q

Gaussian curvature if F = 0

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9
Q

Gaussian curvature if F=0 and E=1

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10
Q

Prove

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11
Q

Gaussian curvature for surface of revolution using only matrix of first fundamental form

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12
Q

Prove that why Map of any region of the earth’s surface must distort distances

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