holomorphic differentials
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1: 30.2 Differential Equations
§30.2 Differential Equations
►§30.2(i) Spheroidal Differential Equation
… ► … ►The Liouville normal form of equation (30.2.1) is … ►§30.2(iii) Special Cases
…2: 15.10 Hypergeometric Differential Equation
§15.10 Hypergeometric Differential Equation
►§15.10(i) Fundamental Solutions
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15.10.1
►This is the hypergeometric differential equation.
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3: 21.7 Riemann Surfaces
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►On a Riemann surface of genus , there are linearly independent holomorphic differentials
, .
If a local coordinate is chosen on the Riemann surface, then the local coordinate representation of these holomorphic differentials is given by
…Thus the differentials
, have no singularities on .
Note that for the purposes of integrating these holomorphic differentials, all cycles on the surface are a linear combination of the cycles , , .
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►Define the holomorphic differential
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4: 1.9 Calculus of a Complex Variable
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►Conversely, if at a given point the partial derivatives , , , and exist, are continuous, and satisfy (1.9.25), then is differentiable at .
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Analyticity
►A function is said to be analytic (holomorphic) at if it is complex differentiable in a neighborhood of . …5: 1.5 Calculus of Two or More Variables
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►The function is continuously differentiable if , , and are continuous, and
twice-continuously differentiable if also , , , and are continuous.
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►If is continuously differentiable, , and at , then in a neighborhood of , that is, an open disk centered at , the equation defines a continuously differentiable function such that , , and .
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►Sufficient conditions for validity are: (a) and are continuous on a rectangle , ; (b) when both and are continuously differentiable and lie in .
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►Suppose that are finite, is finite or , and , are continuous on the partly-closed rectangle or infinite strip .
Suppose also that converges and
converges uniformly on , that is, given any positive number , however small, we can find a number that is independent of and is such that
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6: 36.10 Differential Equations
§36.10 Differential Equations
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36.10.3
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, cusp:
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, swallowtail:
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►In terms of the normal forms (36.2.2) and (36.2.3), the satisfy the following operator equations
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