By André Unterberger

ISBN-10: 3540779108

ISBN-13: 9783540779100

ISBN-10: 3540779116

ISBN-13: 9783540779117

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

Besides researchers and graduate scholars attracted to pseudodifferential research and in modular kinds, the booklet can also attract analysts and physicists, for its techniques making attainable the transformation of creation-annihilation operators into automorphisms, at the same time altering the standard scalar product into an indefinite yet nonetheless non-degenerate one.

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**Extra info for Alternative Pseudodifferential Analysis: With an Application to Modular Forms**

**Example text**

K ) are zero unless j − k ≥ + 2. If such is the case, one can uniquely decompose the family (depending on ζ ) of scalar products so defined as a sum (φζj | [X1 , [X2 , . . , [X , B] . . 51) s−1∈S( j−k−1) j,k j,k where the functions TXj,k ,s are holomorphic. When = 0, we abbreviate TX ,s as Ts . asc The map Op is one to one. 1 for every s. ↑ Proof. 51) to start with. Set χm+1 = Θm hm (cf. 1) for simplicity of notation. 1 that only the terms such that m ∈ S( j − k − 1) (cf. 50)) can contribute to this scalar product.

Also, it only uses the sum of subspaces Sm (R2 ) of S(R2 ) with odd m as a space of symbols. To complete our calculus, we still have to use the sum of subspaces Sm (R2 ) with even m and make it a space of symbols for operators changing the parity of functions. 23) leave no room for choice. 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) !

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). 2 Classes of Operators Hmj,k z cos z sin 39 θ 2 − sin θ 2 + cos θ 2 θ 2 =e i (k− j) θ 2 (z sin θ θ + cos )m+1 Hmj,k (z).

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

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