Features:

Bug Fixes/Re-organization: - Special Function Derived Log Big Pi - N Ellipsoid Volume (1) - Special Function Derived Log Small Pi (2, 3, 4) - Special Function Derived Log Small Pi - Big Estimator (5, 6) - Special Function Derived Log Small Pi - Constructor (7, 8) - Special Function Derived Log Small Pi - Evaluate (9, 10) - Special Function Derived Log Small Pi - Weierstrass (11, 12) - Special Function Derived Power Source Exponential Decay (13, 14, 15) - Special Function Derived Power Source Exponential Decay - Source Coefficient (16, 17) - Special Function Derived Power Source Exponential Decay - Constructor (18, 19) - Special Function Derived Power Source Exponential Decay - Evaluate (20, 21, 22) - Special Function Derived Riemann Zeta (23, 24, 25) - Special Function Derived Riemann Zeta - Gamma Estimator (26, 27) - Special Function Derived Riemann Zeta - Constructor (28, 29) - Special Function Derived Riemann Zeta - Evaluate (30, 31, 32) - Special Function Derived Riemann Zeta - Apery's Constant (33, 34) - Special Function Derived Stretched Exponential Moment (35, 36, 37) - Special Function Derived Stretched Exponential Moment - Beta (38, 39) - Special Function Derived Stretched Exponential Moment - Tau (40, 41) - Special Function Derived Stretched Exponential Moment - Constructor (42, 43) - Special Function Derived Stretched Exponential Moment - Evaluate (44, 45, 46) - Special Function Derived Stretched Exponential Moment - Weierstrass #1 (47, 48, 49) - Special Function Derived Stretched Exponential Moment - Weierstrass #2 (50, 51) - Special Function Digamma Binet First Integral (52, 53) - Special Function Digamma Binet First Integral - Constructor (54) - Special Function Digamma Binet First Integral - Evaluate (55, 56, 57) - Special Function Digamma Cumulative Series Term (58, 59, 60) Samples: IdeaDRIP:
lakshmiDRIP · Feb 5, 2024 · 23249ff · 23249ff
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diff --git a/ReleaseNotes/06_20_2023.txt b/ReleaseNotes/06_20_2023.txt
@@ -0,0 +1,36 @@
+
+Features:
+
+Bug Fixes/Re-organization:
+
+	- Special Function Derived Log Big Pi - N Ellipsoid Volume (1)
+	- Special Function Derived Log Small Pi (2, 3, 4)
+	- Special Function Derived Log Small Pi - Big Estimator (5, 6)
+	- Special Function Derived Log Small Pi - Constructor (7, 8)
+	- Special Function Derived Log Small Pi - Evaluate (9, 10)
+	- Special Function Derived Log Small Pi - Weierstrass (11, 12)
+	- Special Function Derived Power Source Exponential Decay (13, 14, 15)
+	- Special Function Derived Power Source Exponential Decay - Source Coefficient (16, 17)
+	- Special Function Derived Power Source Exponential Decay - Constructor (18, 19)
+	- Special Function Derived Power Source Exponential Decay - Evaluate (20, 21, 22)
+	- Special Function Derived Riemann Zeta (23, 24, 25)
+	- Special Function Derived Riemann Zeta - Gamma Estimator (26, 27)
+	- Special Function Derived Riemann Zeta - Constructor (28, 29)
+	- Special Function Derived Riemann Zeta - Evaluate (30, 31, 32)
+	- Special Function Derived Riemann Zeta - Apery's Constant (33, 34)
+	- Special Function Derived Stretched Exponential Moment (35, 36, 37)
+	- Special Function Derived Stretched Exponential Moment - Beta (38, 39)
+	- Special Function Derived Stretched Exponential Moment - Tau (40, 41)
+	- Special Function Derived Stretched Exponential Moment - Constructor (42, 43)
+	- Special Function Derived Stretched Exponential Moment - Evaluate (44, 45, 46)
+	- Special Function Derived Stretched Exponential Moment - Weierstrass #1 (47, 48, 49)
+	- Special Function Derived Stretched Exponential Moment - Weierstrass #2 (50, 51)
+	- Special Function Digamma Binet First Integral (52, 53)
+	- Special Function Digamma Binet First Integral - Constructor (54)
+	- Special Function Digamma Binet First Integral - Evaluate (55, 56, 57)
+	- Special Function Digamma Cumulative Series Term (58, 59, 60)
+
+
+Samples:
+
+IdeaDRIP:
diff --git a/ScheduleSheet.xlsx b/ScheduleSheet.xlsx
diff --git a/src/main/java/org/drip/specialfunction/derived/LogSmallPi.java b/src/main/java/org/drip/specialfunction/derived/LogSmallPi.java
@@ -1,11 +1,17 @@
 
 package org.drip.specialfunction.derived;
 
+import org.drip.function.definition.R1ToR1;
+import org.drip.numerical.common.NumberUtil;
+
 /*
  * -*- mode: java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
  */
 
 /*!
+ * Copyright (C) 2025 Lakshmi Krishnamurthy
+ * Copyright (C) 2024 Lakshmi Krishnamurthy
+ * Copyright (C) 2023 Lakshmi Krishnamurthy
  * Copyright (C) 2022 Lakshmi Krishnamurthy
  * Copyright (C) 2021 Lakshmi Krishnamurthy
  * Copyright (C) 2020 Lakshmi Krishnamurthy
@@ -78,7 +84,7 @@
 
 /**
  * <i>LogSmallPi</i> implements the Log Small Pi Function - the Reciprocal of the Log Big Pi Function. The
- * References are:
+ * 	References are:
  * 
  * <br><br>
  * 	<ul>
@@ -102,21 +108,35 @@
  * 			Wikipedia (2019): Gamma Function https://en.wikipedia.org/wiki/Gamma_function
  * 		</li>
  * 	</ul>
+ * 
+ * 	It provides the following functionality:
  *
- *	<br><br>
  *  <ul>
- *		<li><b>Module </b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/ComputationalCore.md">Computational Core Module</a></li>
- *		<li><b>Library</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/FunctionAnalysisLibrary.md">Function Analysis Library</a></li>
- *		<li><b>Project</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/specialfunction/README.md">Special Function Implementation Analysis</a></li>
- *		<li><b>Package</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/specialfunction/derived/README.md">Special Functions Derived using Others</a></li>
+ * 		<li>Generate the Weierstrass Infinite Sum Series Version of Log Small Pi Estimator</li>
+ * 		<li><i>LogSmallPi</i> Constructor</li>
+ * 		<li>Retrieve the <i>LogBigPi</i> Estimator</li>
  *  </ul>
  *
+ *  <br>
+ *  <style>table, td, th {
+ *  	padding: 1px; border: 2px solid #008000; border-radius: 8px; background-color: #dfff00;
+ *		text-align: center; color:  #0000ff;
+ *  }
+ *  </style>
+ *  
+ *  <table style="border:1px solid black;margin-left:auto;margin-right:auto;">
+ *		<tr><td><b>Module </b></td> <td><a href = "https://github.com/lakshmiDRIP/DROP/tree/master/ProductCore.md">Product Core Module</a></td></tr>
+ *		<tr><td><b>Library</b></td> <td><a href = "https://github.com/lakshmiDRIP/DROP/tree/master/FixedIncomeAnalyticsLibrary.md">Fixed Income Analytics</a></td></tr>
+ *		<tr><td><b>Project</b></td> <td><a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/specialfunction/README.md">Special Function Implementation and Analysis</a></td></tr>
+ *		<tr><td><b>Package</b></td> <td><a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/specialfunction/derived/README.md">Special Functions Derived using Others</a></td></tr>
+ *  </table>
+ *
  * @author Lakshmi Krishnamurthy
  */
 
-public class LogSmallPi extends org.drip.function.definition.R1ToR1
+public class LogSmallPi extends R1ToR1
 {
-	private org.drip.function.definition.R1ToR1 _logBigPiEstimator = null;
+	private R1ToR1 _logBigPiEstimator = null;
 
 	/**
 	 * Generate the Weierstrass Infinite Sum Series Version of Log Small Pi Estimator
@@ -129,35 +149,31 @@ public class LogSmallPi extends org.drip.function.definition.R1ToR1
 	public static final LogSmallPi Weierstrass (
 		final int termCount)
 	{
-		try
-		{
-			return new LogSmallPi (org.drip.specialfunction.derived.LogBigPi.Weierstrass (termCount));
-		}
-		catch (java.lang.Exception e)
-		{
+		try {
+			return new LogSmallPi (LogBigPi.Weierstrass (termCount));
+		} catch (Exception e) {
 			e.printStackTrace();
 		}
 
 		return null;
 	}
 
 	/**
-	 * LogSmallPi Constructor
+	 * <i>LogSmallPi</i> Constructor
 	 * 
 	 * @param logBigPiEstimator The Log Big Pi Estimator
 	 * 
-	 * @throws java.lang.Exception Thrown if the Inputs are Invalid
+	 * @throws Exception Thrown if the Inputs are Invalid
 	 */
 
 	public LogSmallPi (
-		final org.drip.function.definition.R1ToR1 logBigPiEstimator)
-		throws java.lang.Exception
+		final R1ToR1 logBigPiEstimator)
+		throws Exception
 	{
 		super (null);
 
-		if (null == (_logBigPiEstimator = logBigPiEstimator))
-		{
-			throw new java.lang.Exception ("LogSmallPi Constructor => Invalid Inputs");
+		if (null == (_logBigPiEstimator = logBigPiEstimator)) {
+			throw new Exception ("LogSmallPi Constructor => Invalid Inputs");
 		}
 	}
 
@@ -167,18 +183,17 @@ public LogSmallPi (
 	 * @return The Log Big Pi Estimator
 	 */
 
-	public org.drip.function.definition.R1ToR1 logBigPiEstimator()
+	public R1ToR1 logBigPiEstimator()
 	{
 		return _logBigPiEstimator;
 	}
 
 	@Override public double evaluate (
 		final double z)
-		throws java.lang.Exception
+		throws Exception
 	{
-		if (!org.drip.numerical.common.NumberUtil.IsValid (z))
-		{
-			throw new java.lang.Exception ("LogSmallPi::evaluate => Invalid Inputs");
+		if (!NumberUtil.IsValid (z)) {
+			throw new Exception ("LogSmallPi::evaluate => Invalid Inputs");
 		}
 
 		return -1. * _logBigPiEstimator.evaluate (z);

diff --git a/src/main/java/org/drip/specialfunction/derived/PowerSourceExponentialDecay.java b/src/main/java/org/drip/specialfunction/derived/PowerSourceExponentialDecay.java
@@ -1,11 +1,19 @@
 
 package org.drip.specialfunction.derived;
 
+import org.drip.function.definition.R1ToR1;
+import org.drip.numerical.common.NumberUtil;
+import org.drip.numerical.differentiation.DerivativeControl;
+import org.drip.numerical.integration.NewtonCotesQuadratureGenerator;
+
 /*
  * -*- mode: java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
  */
 
 /*!
+ * Copyright (C) 2025 Lakshmi Krishnamurthy
+ * Copyright (C) 2024 Lakshmi Krishnamurthy
+ * Copyright (C) 2023 Lakshmi Krishnamurthy
  * Copyright (C) 2022 Lakshmi Krishnamurthy
  * Copyright (C) 2021 Lakshmi Krishnamurthy
  * Copyright (C) 2020 Lakshmi Krishnamurthy
@@ -78,7 +86,7 @@
 
 /**
  * <i>PowerSourceExponentialDecay</i> implements the Power Source Exponential Decay Function. The References
- * are:
+ * 	are:
  * 
  * <br><br>
  * 	<ul>
@@ -102,29 +110,43 @@
  * 			Wikipedia (2019): Gamma Function https://en.wikipedia.org/wiki/Gamma_function
  * 		</li>
  * 	</ul>
+ * 
+ * 	It provides the following functionality:
  *
- *	<br><br>
  *  <ul>
- *		<li><b>Module </b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/ComputationalCore.md">Computational Core Module</a></li>
- *		<li><b>Library</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/FunctionAnalysisLibrary.md">Function Analysis Library</a></li>
- *		<li><b>Project</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/specialfunction/README.md">Special Function Implementation Analysis</a></li>
- *		<li><b>Package</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/specialfunction/derived/README.md">Special Functions Derived using Others</a></li>
+ * 		<li>Construct the Analytic Version of <i>PowerSourceExponentialDecay</i></li>
+ * 		<li><i>PowerSourceExponentialDecay</i> Constructor</li>
+ * 		<li>Retrieve the Source Power Coefficient</li>
  *  </ul>
  *
+ *  <br>
+ *  <style>table, td, th {
+ *  	padding: 1px; border: 2px solid #008000; border-radius: 8px; background-color: #dfff00;
+ *		text-align: center; color:  #0000ff;
+ *  }
+ *  </style>
+ *  
+ *  <table style="border:1px solid black;margin-left:auto;margin-right:auto;">
+ *		<tr><td><b>Module </b></td> <td><a href = "https://github.com/lakshmiDRIP/DROP/tree/master/ProductCore.md">Product Core Module</a></td></tr>
+ *		<tr><td><b>Library</b></td> <td><a href = "https://github.com/lakshmiDRIP/DROP/tree/master/FixedIncomeAnalyticsLibrary.md">Fixed Income Analytics</a></td></tr>
+ *		<tr><td><b>Project</b></td> <td><a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/specialfunction/README.md">Special Function Implementation and Analysis</a></td></tr>
+ *		<tr><td><b>Package</b></td> <td><a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/specialfunction/derived/README.md">Special Functions Derived using Others</a></td></tr>
+ *  </table>
+ *
  * @author Lakshmi Krishnamurthy
  */
 
-public class PowerSourceExponentialDecay extends org.drip.function.definition.R1ToR1
+public class PowerSourceExponentialDecay extends R1ToR1
 {
-	private double _sourcePowerCoefficient = java.lang.Double.NaN;
+	private double _sourcePowerCoefficient = Double.NaN;
 
 	/**
-	 * Construct the Analytic Version of PowerSourceExponentialDecay
+	 * Construct the Analytic Version of <i>PowerSourceExponentialDecay</i>
 	 * 
 	 * @param logGammaEstimator The Log Gamma Estimator
 	 * @param sourcePowerCoefficient The Source Power Coefficient
 	 * 
-	 * @return The Analytic Version of PowerSourceExponentialDecay
+	 * @return The Analytic Version of <i>PowerSourceExponentialDecay</i>
 	 */
 
 	public static final PowerSourceExponentialDecay Analytic (
@@ -172,25 +194,24 @@ public static final PowerSourceExponentialDecay Analytic (
 	}
 
 	/**
-	 * PowerSourceExponentialDecay Constructor
+	 * <i>PowerSourceExponentialDecay</i> Constructor
 	 * 
-	 * @param dc The Derivative Control
+	 * @param derivativeControl The Derivative Control
 	 * @param sourcePowerCoefficient The Source Power Coefficient
 	 * 
-	 * @throws java.lang.Exception Thrown if the Inputs are Invalid
+	 * @throws Exception Thrown if the Inputs are Invalid
 	 */
 
 	public PowerSourceExponentialDecay (
-		final org.drip.numerical.differentiation.DerivativeControl dc,
+		final DerivativeControl derivativeControl,
 		final double sourcePowerCoefficient)
 		throws java.lang.Exception
 	{
-		super (dc);
+		super (derivativeControl);
 
-		if (!org.drip.numerical.common.NumberUtil.IsValid (_sourcePowerCoefficient = sourcePowerCoefficient)
-			|| 0. >= _sourcePowerCoefficient)
-		{
-			throw new java.lang.Exception ("PowerSourceExponentialDecay Constructor => Invalid Inputs");
+		if (!NumberUtil.IsValid (_sourcePowerCoefficient = sourcePowerCoefficient) ||
+			0. >= _sourcePowerCoefficient) {
+			throw new Exception ("PowerSourceExponentialDecay Constructor => Invalid Inputs");
 		}
 	}
 
@@ -207,28 +228,20 @@ public double sourcePowerCoefficient()
 
 	@Override public double evaluate (
 		final double exponentialDecayCoefficient)
-		throws java.lang.Exception
+		throws Exception
 	{
-		if (!org.drip.numerical.common.NumberUtil.IsValid (exponentialDecayCoefficient) ||
-			0. >= exponentialDecayCoefficient)
-		{
-			throw new java.lang.Exception ("PowerSourceExponentialDecay::evaluate => Invalid Inputs");
+		if (!NumberUtil.IsValid (exponentialDecayCoefficient) || 0. >= exponentialDecayCoefficient) {
+			throw new Exception ("PowerSourceExponentialDecay::evaluate => Invalid Inputs");
 		}
 
-		return org.drip.numerical.integration.NewtonCotesQuadratureGenerator.GaussLaguerreLeftDefinite (
-			0.,
-			100
-		).integrate (
-			new org.drip.function.definition.R1ToR1 (null)
-			{
+		return NewtonCotesQuadratureGenerator.GaussLaguerreLeftDefinite (0., 100).integrate (
+			new R1ToR1 (null) {
 				@Override public double evaluate (
 					final double t)
-					throws java.lang.Exception
+					throws Exception
 				{
-					return java.lang.Double.isInfinite (t) ? 0. : java.lang.Math.pow (
-						t,
-						_sourcePowerCoefficient
-					) * java.lang.Math.exp (-1. * exponentialDecayCoefficient * t);
+					return Double.isInfinite (t) ? 0. : Math.pow (t, _sourcePowerCoefficient) *
+						Math.exp (-1. * exponentialDecayCoefficient * t);
 				}
 			}
 		);