# New in *MathWorld* -- March
2004

### Wednesday March 31, 2004

- Amenable
- Approximation Property
- Banach Limit
- Bounded Approximation Property
- Character
- Character Space
- Clopen
- Contractibility
- Contractible (modified)
- Derivation (modified)
- Discrete Group Algebra
- Discrete Semigroup Algebra
- Disk Algebra (modified)
- Disk Line Picking (modified)
- Finsler Module
- Gelfand-Naimark Theorem
- Gelfand Theorem
- Group Algebra (modified)
- Haar Measure (modified)
- Hilbert-Schmidt Operator
- Hochschild-Kamowitz Complex
- Maximal Ideal Space
- Minimal Banach Space
- Nest and Nest Algebra
- Normed Banach Bimodule
- Normed Banach Module
- Schauder Basis
- Trace-Class Operator
- Triangular Algebra
- Unilateral Shift
- Volterra Algebra
- Weakly Amenable
- Weakly Complemented Subspace
- Weighted Shift
- Wiener Algebra

### Tuesday March 30, 2004

- Algebraic Conjugate Space
- Baire Function
- Ball Line Picking (modified)
- Complementary Subspace Problem
- Complemented Subspace
- Disk Line Picking (modified)
- Dual Vector Space (modified)
- Fibonacci Number (modified)
- Hilbert C^*-Module
- Noncommutative Topology
- Prime Banach Space
- Ramanujan Constant (modified)
- Ramanujan-Soldner Constant
- Reciprocal Fibonacci Constant
- Reflexive Space
- Sphere Line Picking (modified)
- Sphere Tetrahedron Picking (modified)
- Struve Function (modified)

### Monday March 29, 2004

- Liouville's Constant (modified)
- Negative Integer (modified)
- Negative Real Axis
- Positive Real Axis
- Quartic Equation (modified)
- Real Axis (modified)
- Real Line (modified)

### Sunday March 28, 2004

- Fibonacci Number (modified)
- Integer Sequence Primes (modified)
- Letter
- Struve Function (modified)
- Tilde (modified)

### Saturday March 27, 2004

- Double Mersenne Number (modified)
- Fermat Number (modified)
- Mersenne Number (modified)

### Friday March 26, 2004

- Bernoulli Number (modified)
- Consecutive Number Sequences (modified)
- Dissection Fallacy (modified)
- Integer Sequence Primes (modified)

### Thursday March 25, 2004

- Ball Line Picking (modified)
- Factorial (modified)
- Pythagorean Triple (modified)
- Sequent Calculus (modified)
- Triangular Number (modified)

### Wednesday March 24, 2004

- Square Triangle Picking (modified)

### Tuesday March 23, 2004

- Inverse Function (modified)
- Pi Approximations (modified)
- Sign (modified)
- Square Root (modified)

### Sunday March 21, 2004

- Cube Duplication (modified)
- Gelfond-Schneider Constant (modified)
- Gelfond's Constant (modified)
- Hilbert's Problems (modified)
- Polygon Area (modified)
- Prince Rupert's Cube (modified)
- Square Root Algorithms (modified)
- Square Triangle Picking (modified)
- Steiner's Problem (modified)
- Wallis's Constant

### Saturday March 20, 2004

- Arnauld's Paradox
- Complex Number (modified)
- Cylindric Section (modified)
- Derangement (modified)
- Ellipsoidal Section
- Liouville Number (modified)
- Liouville's Constant (modified)
- Near-Square Prime (modified)
- Negative (modified)
- Negative Integer
- Negative Number
- Positive Integer (modified)
- Positive Number
- Spheric Section
- Spheroidal Section
- Torus-Plane Intersection
- Totient Function (modified)

### Friday March 19, 2004

- Cylindrical Segment (modified)
- Square Triangle Picking (modified)
- Triangle Triangle Picking (modified)

### Thursday March 18, 2004

- Divisibility Tests (modified)
- Hat (modified)
- Jacobi's Imaginary Transformation (modified)
- Jacobi Theta Functions (modified)
- Macron (modified)
- Mean (modified)
- Sample Mean (modified)
- Triangle Triangle Picking (modified)

### Wednesday March 17, 2004

- Almost Integer (modified)
- Bernoulli Number (modified)
- Cube Line Picking (modified)
- Cube Triangle Picking (modified)
- Diagonal Paradox (modified)
- Disk Line Picking (modified)
- Euler-Mascheroni Constant (modified)
- Half-Period Ratio (modified)
- Jacobi's Imaginary Transformation (modified)
- Jacobi Theta Functions (modified)
- Near-Square Prime (modified)
- Perspective Projection
- Square Triangle Picking (modified)

### Tuesday March 16, 2004

- Convex (modified)
- Equilateral Triangle Line Picking
- Fermat's 4n+1 Theorem (modified)
- Fermat's Theorem (modified)
- Hypercube Line Picking (modified)
- Integer Sequence Primes (modified)
- Interval (modified)
- Isosceles Right Triangle Line Picking
- Sequent Calculus
- Star Convex
- Triangle Line Picking (modified)
- Vertical Perspective Projection (modified)

### Monday March 15, 2004

- Disk Line Picking (modified)
- Near-Square Prime (modified)
- Paterson's Worms (modified)
- Ramanujan phi-Function (modified)

### Sunday March 14, 2004

- Near-Square Prime (modified)
- Parallelogram (modified)
- Soddy Circles (modified)
- Square Line Picking (modified)
- Statistical Median (modified)
- Tangent Circles (modified)

### Friday March 12, 2004

- Bernoulli Number (modified)
- Bicentric Quadrilateral (modified)
- Brahmagupta's Formula (modified)
- Convenient Number
- Cyclic Quadrilateral (modified)
- Diagonal Paradox
- Heine-Borel Theorem (modified)
- Heptagon (modified)
- Idoneal Number (modified)
- Interprime (modified)
- Irregular Prime (modified)
- Septagon

### Thursday March 11, 2004

- Catalan-Mersenne Number
- Catalan Number (modified)
- Double Mersenne Number (modified)
- Fermat Prime (modified)
- Gigantic Prime (modified)
- Integer Sequence Primes (modified)
- Lehmer's Formula (modified)
- Montgomery's Pair Correlation Conjecture (modified)
- Proth Number (modified)
- Sophie Germain Prime (modified)
- Thâbit ibn Kurrah Number
- Thâbit ibn Kurrah Rule (modified)

### Wednesday March 10, 2004

- Affine (modified)
- Affine Transformation (modified)
- Fermat Number (modified)
- Fermat Prime (modified)
- Landau's Formula
- Mellin Transform (modified)
- Primorial (modified)
- Primorial Prime
- Triangle Line Picking (modified)

### Tuesday March 9, 2004

- Cullen Number (modified)
- Heine-Borel Theorem (modified)
- Integer Sequence Primes

### Monday March 8, 2004

- Catalan Number (modified)
- Factorial Prime (modified)
- Fibonacci Number (modified)
- Nexus Number (modified)
- Perfect Square Dissection (modified)
- Periodic Continued Fraction (modified)
- Power Sum (modified)
- Prime Arithmetic Progression (modified)
- Primorial (modified)

### Sunday March 7, 2004

- Apéry Number (modified)
- Catalan Number (modified)
- Computational Irreducibility (modified)
- Delannoy Number (modified)
- Klee's Identity (modified)
- Legendre Transform (modified)
- Motzkin Number (modified)
- Nexus Number (modified)
- Riemann-von Mangoldt Formula
- Schmidt's Problem (modified)
- Secant (modified)
- Super Catalan Number (modified)

### Saturday March 6, 2004

- Book Stacking Problem (modified)
- Bretschneider's Formula (modified)
- Catalan Number (modified)
- Cosine (modified)
- Delannoy Number (modified)
- Euler Number (modified)
- Exponential Function (modified)
- Fractional Part (modified)
- Genocchi Number (modified)
- Harmonic Number (modified)
- Lucas Number (modified)
- Motzkin Number (modified)
- Partition Function P (modified)
- Partition Function Q (modified)
- Quadrilateral (modified)
- Radon Measure
- Sine (modified)
- Sophie Germain Prime (modified)
- Subfactorial (modified)
- Thue-Morse Sequence (modified)
- Triangle (modified)
- Triangle Area (modified)
- Triangle Line Picking
- Triangle Point Picking (modified)
- Tribonacci Number (modified)
- Wolstenholme's Theorem (modified)

### Friday March 5, 2004

- Apéry Number (modified)
- Bernoulli Number (modified)
- Consecutive Number Sequences (modified)
- Egoroff's Theorem
- Franel Number (modified)
- Prime Gaps (modified)
- Schmidt's Problem
- Strehl Identities (modified)
- Three-Chord Lemma

### Thursday March 4, 2004

- Colon (modified)
- Composition Algebra
- Cross Product (modified)
- Distributive (modified)
- Equilateral Triangle (modified)
- Prime Gaps (modified)
- Real Normed Algebra (modified)
- Regular Polygon (modified)
- Riesel Conjecture
- Riesel Number (modified)
- Riesel Problem
- Square (modified)

### Wednesday March 3, 2004

- Colon
- Quaternion (modified)
- Sine-Gordon Equation (modified)
- Trisection (modified)

### Tuesday March 2, 2004

- Bessel's Correction (modified)
- Buffon-Laplace Needle Problem (modified)
- Buffon's Needle Problem (modified)
- Cylinder (modified)
- Fibonacci Number (modified)
- Inverse Erf (modified)
- Inverse Erfc (modified)
- Legendre-Gauss Quadrature (modified)
- Legendre Polynomial (modified)
- Near-Square Prime (modified)
- Probable Error (modified)

### Monday March 1, 2004

- Bisection (modified)
- Bisector (modified)
- Marion's Theorem
- Midpoint (modified)
- Morgan's Theorem
- Multisection (modified)

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