Add files via upload

2026-05-20 02:57:34 +00:00 · 2021-11-11 21:34:46 -08:00
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+//  y-cruncher Custom Formula File
+//
+//  This can be loaded directly from the Custom Compute menu or
+//  entered from the command line as "custom:filename".
+//
+//      y-cruncher custom custom:"constant - algorithm"
+//
+//
+//    Author:  Alexander J. Yee
+//    Date:    October 6, 2018
+//
+//    Value: 1.08232323371113819151600369654116790277475095191872...
+//
+//    Zeta(2) = Pi^4 / 90
+//
+//    https://en.wikipedia.org/wiki/Chudnovsky_algorithm
+//
+
+{
+    NameShort : "Zeta(4)"
+    NameLong : "Zeta(4)"
+    AlgorithmShort : "Chudnovsky"
+    AlgorithmLong : "Chudnovsky (1988)"
+    Formula : {
+        LinearCombination : [
+            [
+                17795560
+                {Power : [
+                    {SeriesHypergeometric : {
+                        Power : -1
+                        CoefficientP : 1
+                        CoefficientQ : 13591409
+                        CoefficientD : 213440
+                        PolynomialP : [-67957045 -2100495856 23608573992 -57896553024 39250089648]
+                        PolynomialQ : [0 0 0 -10939058860032000]
+                        PolynomialR : [-5 46 -108 72]
+                    }}
+                    4
+                ]}
+            ]
+        ]
+    }
+}