# New in *MathWorld* -- September
2013

### Friday September 27, 2013

- Floor Function (modified)
- Nearest Integer Function (modified)

### Wednesday September 25, 2013

- Alternating Sign Matrix (modified)
- Circumference (modified)
- Perimeter (modified)

### Monday September 23, 2013

- Cross Product (modified)

### Tuesday September 17, 2013

- Apéry's Constant Digits (modified)
- Constant Digit Scanning (modified)

### Monday September 16, 2013

- Apéry's Constant (modified)
- Apéry's Constant Continued Fraction
- Apéry's Constant Digits
- Binary Code
- Constant Digit Scanning (modified)
- Decimal Code
- Duodecimal Code
- Earls Sequence (modified)
- Hexadecimal Code
- Octal Code
- Quaternary Code
- Sexagesimal Code
- Soldner's Constant (modified)
- Soldner's Constant Continued Fraction
- Soldner's Constant Digits
- Ternary Code

### Sunday September 15, 2013

- Constant Digit Scanning (modified)
- Large Prime (modified)
- Probable Prime (modified)

### Saturday September 14, 2013

- Champernowne Constant Digits (modified)
- Constant Digit Scanning
- Copeland-Erdős Constant Digits (modified)
- e Digits (modified)
- Euler-Mascheroni Constant Digits (modified)
- Glaisher-Kinkelin Constant Digits (modified)
- Golden Ratio Digits (modified)
- Golomb-Dickman Constant Digits (modified)
- Integer Sequence Primes (modified)
- Khinchin's Constant Digits (modified)
- Natural Logarithm of 10 Digits (modified)
- Natural Logarithm of 2 Digits (modified)
- Pi Digits (modified)
- Pythagoras's Constant Digits (modified)
- Theodorus's Constant Digits (modified)
- Wagstaff Prime (modified)

### Wednesday September 11, 2013

- Extended Complex Plane (modified)
- Pi Digits (modified)

### Tuesday September 10, 2013

- e (modified)
- e Continued Fraction
- e Digits (modified)
- Euler's Continued Fraction (modified)

### Saturday September 7, 2013

- Sierpiński Gasket Graph (modified)
- Sierpiński Graph (modified)

### Wednesday September 4, 2013

- Hexagonal King Graph (modified)
- Recurrence Formula
- Triangular Grid Graph (modified)

### Tuesday September 3, 2013

- Sum of Squares Function (modified)

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