Existence of a parameterization whose differential has columns $v_1,v_2 in T_p(S)$
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Let $S subseteq mathbbR^3$ be a surface and $p in S$. Given any basis $v_1,v_2$ of the tangent plane, there exists some parameterization $varphi: U to S$ centered at $p$ such that $fracpartial varphipartial u=v_1$ and $fracpartial varphipartial v=v_2$?
In general, if I take $v_1$, there exists a curve $alpha: (-epsilon,epsilon) to S$ such that $alpha(0)=p$ and $alpha'(0)=v_1$. Similarly for $v_2$. If $psi$ is a given parameterization whose image contains the trace of the curve $alpha$, I consider $dpsi^-1(v_1)=w_1$ that clearly belongs to $T_p(U)=mathbbR^2$. Then $w_1$ may be written as linear combination of the basis of $T_q(U)$, that we denote by $fracpartial partial x,fracpartialpartial y$. Repeating the argument for $v_2$, we obtain a matrix $A$ whose rows represent the coordinates of $w_1$ and $w_2$ with respect to the basis of $T_q(U)$. Is the map $varphi:=psi circ A$ the desired parameterization? May you express the direct computations for $fracpartial (psi circ A)partial u$, please?
differential-geometry
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Let $S subseteq mathbbR^3$ be a surface and $p in S$. Given any basis $v_1,v_2$ of the tangent plane, there exists some parameterization $varphi: U to S$ centered at $p$ such that $fracpartial varphipartial u=v_1$ and $fracpartial varphipartial v=v_2$?
In general, if I take $v_1$, there exists a curve $alpha: (-epsilon,epsilon) to S$ such that $alpha(0)=p$ and $alpha'(0)=v_1$. Similarly for $v_2$. If $psi$ is a given parameterization whose image contains the trace of the curve $alpha$, I consider $dpsi^-1(v_1)=w_1$ that clearly belongs to $T_p(U)=mathbbR^2$. Then $w_1$ may be written as linear combination of the basis of $T_q(U)$, that we denote by $fracpartial partial x,fracpartialpartial y$. Repeating the argument for $v_2$, we obtain a matrix $A$ whose rows represent the coordinates of $w_1$ and $w_2$ with respect to the basis of $T_q(U)$. Is the map $varphi:=psi circ A$ the desired parameterization? May you express the direct computations for $fracpartial (psi circ A)partial u$, please?
differential-geometry
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up vote
1
down vote
favorite
up vote
1
down vote
favorite
Let $S subseteq mathbbR^3$ be a surface and $p in S$. Given any basis $v_1,v_2$ of the tangent plane, there exists some parameterization $varphi: U to S$ centered at $p$ such that $fracpartial varphipartial u=v_1$ and $fracpartial varphipartial v=v_2$?
In general, if I take $v_1$, there exists a curve $alpha: (-epsilon,epsilon) to S$ such that $alpha(0)=p$ and $alpha'(0)=v_1$. Similarly for $v_2$. If $psi$ is a given parameterization whose image contains the trace of the curve $alpha$, I consider $dpsi^-1(v_1)=w_1$ that clearly belongs to $T_p(U)=mathbbR^2$. Then $w_1$ may be written as linear combination of the basis of $T_q(U)$, that we denote by $fracpartial partial x,fracpartialpartial y$. Repeating the argument for $v_2$, we obtain a matrix $A$ whose rows represent the coordinates of $w_1$ and $w_2$ with respect to the basis of $T_q(U)$. Is the map $varphi:=psi circ A$ the desired parameterization? May you express the direct computations for $fracpartial (psi circ A)partial u$, please?
differential-geometry
Let $S subseteq mathbbR^3$ be a surface and $p in S$. Given any basis $v_1,v_2$ of the tangent plane, there exists some parameterization $varphi: U to S$ centered at $p$ such that $fracpartial varphipartial u=v_1$ and $fracpartial varphipartial v=v_2$?
In general, if I take $v_1$, there exists a curve $alpha: (-epsilon,epsilon) to S$ such that $alpha(0)=p$ and $alpha'(0)=v_1$. Similarly for $v_2$. If $psi$ is a given parameterization whose image contains the trace of the curve $alpha$, I consider $dpsi^-1(v_1)=w_1$ that clearly belongs to $T_p(U)=mathbbR^2$. Then $w_1$ may be written as linear combination of the basis of $T_q(U)$, that we denote by $fracpartial partial x,fracpartialpartial y$. Repeating the argument for $v_2$, we obtain a matrix $A$ whose rows represent the coordinates of $w_1$ and $w_2$ with respect to the basis of $T_q(U)$. Is the map $varphi:=psi circ A$ the desired parameterization? May you express the direct computations for $fracpartial (psi circ A)partial u$, please?
differential-geometry
differential-geometry
edited Sep 3 at 14:30
asked Sep 3 at 12:45
TheWanderer
1,77211029
1,77211029
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