|  | 1. | Weierstrass also made significant advancements in the field of calculus of variations. 
 
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|  | 2. | He did research on differential equations, the calculus of variations and mechanics. 
 
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|  | 3. | Noether's theorem is used in theoretical physics and the calculus of variations. 
 
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|  | 4. | His specialisms included nonlinear partial differential equations and calculus of variations. 
 
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|  | 5. | The dispute marked the origin of a new discipline, the calculus of variations. 
 
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|  | 6. | He mainly studied the calculus of variations, partial differential equations, and differential geometry. 
 
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|  | 7. | His thesis dealt with the topic of the calculus of variations. 
 
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|  | 8. | He works on partial differential equations and the calculus of variations. 
 
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|  | 9. | Mason's mathematical research interests included differential equations, the calculus of variations, and electromagnetic theory. 
 
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|  | 10. | He works on the calculus of variations, partial differential equations and geometric measure theory. 
 
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