List questions from differential-operators

Published on 22 Mar 2026 - 5:44

178

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How can I give an explicit presentation of the ring of differential operators over a smooth variety?

Published on 25 Mar 2026 - 6:22

315

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dimension of kernel of differential operator restricted to polynomials

Published on 22 Mar 2026 - 0:45

87

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Coordinate-free description of the kernel of the jet projection?

Published on 22 Mar 2026 - 15:50

586

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Is $x * d/dx$ closed on $L^2(\mathbb{R})$?

Published on 22 Mar 2026 - 5:28

67

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Is the assumption that supports do not increase really needed in the Peetre theorem?

Published on 22 Mar 2026 - 14:17

886

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"Del" operator vs Vectors

Published on 22 Mar 2026 - 3:09

321

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Elliptic operator $d+d^*$

Published on 22 Mar 2026 - 9:41

110

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Elliptic Operator , a priori bounds

Published on 21 Mar 2026 - 23:49

641

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Fractional Laplacian

Published on 25 Mar 2026 - 4:35

125

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Does the left shift operator, as defined here, satisfy an analogue of the product rule, and if so, what?

Published on 27 Nov 2016 - 3:25

5.3k

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Show the differential operator is bounded

Published on 22 Mar 2026 - 3:43

338

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What is an example of a symmetric operator with non-real spectrum?

Published on 21 Mar 2026 - 20:43

45

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Intuitive reasons for studying $J$-holomorphic curves with $W^{k,p}$ space?

Published on 22 Mar 2026 - 7:07

120

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A detail in Qing-Lin's Elliptic PDE book, section 3.4.

Published on 22 Mar 2026 - 5:55

List Question

Universal enveloping algebra of the Lie algebra of vector fields on a manifold

How can I give an explicit presentation of the ring of differential operators over a smooth variety?

dimension of kernel of differential operator restricted to polynomials

Coordinate-free description of the kernel of the jet projection?

Is $x * d/dx$ closed on $L^2(\mathbb{R})$?

Is the assumption that supports do not increase really needed in the Peetre theorem?

"Del" operator vs Vectors

Elliptic operator $d+d^*$

Elliptic Operator , a priori bounds

Fractional Laplacian

Does the left shift operator, as defined here, satisfy an analogue of the product rule, and if so, what?

Show the differential operator is bounded

What is an example of a symmetric operator with non-real spectrum?

Intuitive reasons for studying $J$-holomorphic curves with $W^{k,p}$ space?

A detail in Qing-Lin's Elliptic PDE book, section 3.4.

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