Vector field tangent to manifold.

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Let $f:Mto mathbbR$ with M manifold.
To prove that an $X$ vector field is tangent to a surface. Is it enough to prove that $Xf = 0?$




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    Let $f:Mto mathbbR$ with M manifold.
    To prove that an $X$ vector field is tangent to a surface. Is it enough to prove that $Xf = 0?$




    manifolds




    share|cite|improve this question





















      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Let $f:Mto mathbbR$ with M manifold.
      To prove that an $X$ vector field is tangent to a surface. Is it enough to prove that $Xf = 0?$




      manifolds




      share|cite|improve this question











      Let $f:Mto mathbbR$ with M manifold.
      To prove that an $X$ vector field is tangent to a surface. Is it enough to prove that $Xf = 0?$





      manifolds





      share|cite|improve this question










      share|cite|improve this question




      share|cite|improve this question









      asked Jul 31 at 4:22









      eraldcoil

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