1<?xml version="1.0" encoding="UTF-8"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN" "http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd" [<!ENTITY mathml 'http://www.w3.org/1998/Math/MathML'>]> 3<html xmlns="http://www.w3.org/1999/xhtml"> 4<head><title>hyper_2f0</title> 5<!-- MathML created with MathCast Equation Editor version 0.92 --> 6</head> 7<body> 8<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> 9 <mrow> 10 <msub> 11 <mi/> 12 <mn>2</mn> 13 </msub> 14 <msub> 15 <mi>F</mi> 16 <mn>0</mn> 17 </msub> 18 <mfenced> 19 <mrow> 20 <msub> 21 <mi>a</mi> 22 <mn>1</mn> 23 </msub> 24 <msub> 25 <mi>a</mi> 26 <mn>2</mn> 27 </msub> 28 <mo>;</mo> 29 <mo>;</mo> 30 <mi>z</mi> 31 </mrow> 32 </mfenced> 33 <mo>=</mo> 34 <munderover> 35 <mo>∑</mo> 36 <mrow> 37 <mi>k</mi> 38 <mo>=</mo> 39 <mn>1</mn> 40 </mrow> 41 <mi>∞</mi> 42 </munderover> 43 <mfrac> 44 <mrow> 45 <msub> 46 <mfenced> 47 <mrow> 48 <msub> 49 <mi>a</mi> 50 <mn>1</mn> 51 </msub> 52 </mrow> 53 </mfenced> 54 <mi>k</mi> 55 </msub> 56 <msub> 57 <mfenced> 58 <mrow> 59 <msub> 60 <mi>a</mi> 61 <mn>2</mn> 62 </msub> 63 </mrow> 64 </mfenced> 65 <mi>k</mi> 66 </msub> 67 <msup> 68 <mi>z</mi> 69 <mi>k</mi> 70 </msup> 71 </mrow> 72 <mrow> 73 <mi>k</mi> 74 <mo>!</mo> 75 </mrow> 76 </mfrac> 77 </mrow> 78</math></body> 79</html>