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  2. Palindromic number - Wikipedia

    en.wikipedia.org/wiki/Palindromic_number

    A number that is non-palindromic in all bases b in the range 2 ≤ b ≤ n − 2 can be called a strictly non-palindromic number. For example, the number 6 is written as "110" in base 2, "20" in base 3, and "12" in base 4, none of which are palindromes. All strictly non-palindromic numbers larger than 6 are prime.

  3. Longest palindromic substring - Wikipedia

    en.wikipedia.org/wiki/Longest_palindromic_substring

    Since the palindrome at the MirroredCenter is "aba" and extends beyond the boundaries of the "Old" palindrome, we know the longest palindrome at the second "b" can only extend up to the border of the "Old" palindrome. We know this because if the character after the "Old" palindrome had been an "a" instead of a "c", the "Old" palindrome would ...

  4. Palindromic prime - Wikipedia

    en.wikipedia.org/wiki/Palindromic_prime

    In mathematics, a palindromic prime (sometimes called a palprime [1]) is a prime number that is also a palindromic number.Palindromicity depends on the base of the number system and its notational conventions, while primality is independent of such concerns.

  5. Palindrome tree - Wikipedia

    en.wikipedia.org/wiki/Palindrome_Tree

    In computer science a palindrome tree, also called an EerTree, [1] is a type of search tree, that allows for fast access to all palindromes contained in a string.They can be used to solve the longest palindromic substring, the k-factorization problem [2] (can a given string be divided into exactly k palindromes), palindromic length of a string [3] (what is the minimum number of palindromes ...

  6. Palindrome - Wikipedia

    en.wikipedia.org/wiki/Palindrome

    A palindrome is a word, number, phrase, or other sequence of symbols that reads the same backwards as forwards, such as madam or racecar, the date "22/02/2022" and the sentence: "A man, a plan, a canal – Panama".

  7. Lychrel number - Wikipedia

    en.wikipedia.org/wiki/Lychrel_number

    A Lychrel number is a natural number that cannot form a palindrome through the iterative process of repeatedly reversing its digits and adding the resulting numbers. This process is sometimes called the 196-algorithm , after the most famous number associated with the process.

  8. Suffix tree - Wikipedia

    en.wikipedia.org/wiki/Suffix_tree

    The numbers in the leaves give the start position of the corresponding suffix. Suffix links, drawn dashed, are used during construction. In computer science , a suffix tree (also called PAT tree or, in an earlier form, position tree ) is a compressed trie containing all the suffixes of the given text as their keys and positions in the text as ...

  9. Pascal's triangle - Wikipedia

    en.wikipedia.org/wiki/Pascal's_triangle

    Pascal's triangle has many properties and contains many patterns of numbers. Each frame represents a row in Pascal's triangle. Each column of pixels is a number in binary with the least significant bit at the bottom. Light pixels represent 1 and dark pixels 0. The numbers of compositions of n +1 into k +1 ordered partitions form Pascal's triangle.