A geometrical theory of multiple integral problems in the calculus of variations

1971 ◽  
Vol 7 (2-3) ◽  
pp. 173-181 ◽  
Author(s):  
E. T. Davies
1968 ◽  
Vol 20 ◽  
pp. 639-657 ◽  
Author(s):  
H. Rund

Let Xn denote an n-dimensional differentiate manifold referred to local coordinates xi. An m-dimensional subspace Cm (m < n) of Xn can be represented parametrically in the form1.1


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