Group Theory

Get Alternative Pseudodifferential Analysis: With an Application PDF

By André Unterberger

ISBN-10: 3540779108

ISBN-13: 9783540779100

ISBN-10: 3540779116

ISBN-13: 9783540779117

This quantity introduces a wholly new pseudodifferential research at the line, the competition of which to the standard (Weyl-type) research should be stated to mirror that, in illustration thought, among the representations from the discrete and from the (full, non-unitary) sequence, or that among modular different types of the holomorphic and alternative for the standard Moyal-type brackets. This pseudodifferential research is determined by the one-dimensional case of the lately brought anaplectic illustration and research, a competitor of the metaplectic illustration and traditional analysis.

Besides researchers and graduate scholars drawn to pseudodifferential research and in modular varieties, the e-book can also entice analysts and physicists, for its options making attainable the transformation of creation-annihilation operators into automorphisms, concurrently altering the standard scalar product into an indefinite yet nonetheless non-degenerate one.

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Example text

1) again lies in S(R2 ) and remains in a bounded subset of this space as long as |α |+|β | is bounded. 8), as opposed to A∗ : the space S A (R2 ) is not invariant under the symmetry (x, ξ ) → (x, −ξ ). Note that Tα , β Tα , β = Tα +α , β +β . This definition is given so that, setting w = x + i ξ , one should be able to expo¯ nentiate the operator ∂∂w = 12 ( ∂∂x − i ∂∂ξ ) and the operator of multiplication by w: indeed, one has d ∂ T )T = (−2π β w¯ − 2i α . 2) dt t α ,t β ∂ w t α ,t β For instance, all usual (two-dimensional) Hermite functions lie in S A (R2 ).

2 Classes of Operators We are now ready to start with the more technical matters. 1. Given m = 0, 1, . . 1) for some constant Cmj,k . One has Cmj,k = 0 unless m + 1 − j + k is even and m + 1 ≤ j − k. As a special case, ⎧ m+1 2−2k (2k) ! if k ≥ 0, ⎪ ⎨(−2i) k! k+m+1,k if − m ≤ k ≤ −1, = (−2i)m+1 Cm ⎪ ⎩ |2k+2m+2| ! m+1 k+m+1 2k+2m+2 (−2i) (−1) 2 if k ≤ −m − 1. |k+m+1| ! 2) Proof. 4) reduce the proof of the lemma to the case when ζ = i, which we assume from now on. 11) Set Hmj,k (z) = (A−m−1 z that the pseudoscalar product is antilinear with respect to its argument on the left).

In [36, p. 32) we then observed the following formula, valid in the Weyl calculus: (mad Λ) Op(S) = Op (E S) . 33) This operation turned out to play an essential role in automorphic pseudodifferential analysis since [36, p. 144] it made it possible to kill the pole at λ = 0 of the spectral density of the sharp composition of two Eisenstein distributions. 33). 8. Given h ∈ (S(R2 )) , one has (mad (P ∧ Q)) Opasc (h) = 1 Opasc (R h). 34) Proof. 35): applying these formulas, one finds 2 [ A−m , A∗z ].

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Alternative Pseudodifferential Analysis: With an Application to Modular Forms by André Unterberger


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