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  2. XPath - Wikipedia

    en.wikipedia.org/wiki/XPath

    XPath (XML Path Language) is an expression language designed to support the query or transformation of XML documents. It was defined by the World Wide Web Consortium (W3C) in 1999, [1] and can be used to compute values (e.g., strings, numbers, or Boolean values) from the content of an XML document.

  3. Tree (abstract data type) - Wikipedia

    en.wikipedia.org/wiki/Tree_(abstract_data_type)

    Each non-root node can be treated as the root node of its own subtree, which includes that node and all its descendants. [a] [3] Other terms used with trees: Neighbor Parent or child. Ancestor A node reachable by repeated proceeding from child to parent. Descendant A node reachable by repeated proceeding from parent to child. Also known as ...

  4. Genealogical numbering systems - Wikipedia

    en.wikipedia.org/wiki/Genealogical_numbering_systems

    Ahnentafel, also known as the Eytzinger Method, Sosa Method, and Sosa-Stradonitz Method, allows for the numbering of ancestors beginning with a descendant.This system allows one to derive an ancestor's number without compiling the complete list, and allows one to derive an ancestor's relationship based on their number.

  5. Issue (genealogy) - Wikipedia

    en.wikipedia.org/wiki/Issue_(genealogy)

    Issue typically means a person's lineal descendants—all genetic descendants of a person, regardless of degree. [1] Issue is a narrower category than heirs, which includes spouses, and collaterals (siblings, cousins, aunts, and uncles). [2] This meaning of issue arises most often in wills and trusts. [3]

  6. Recursive descent parser - Wikipedia

    en.wikipedia.org/wiki/Recursive_descent_parser

    In computer science, a recursive descent parser is a kind of top-down parser built from a set of mutually recursive procedures (or a non-recursive equivalent) where each such procedure implements one of the nonterminals of the grammar.

  7. Lineal descendant - Wikipedia

    en.wikipedia.org/wiki/Lineal_descendant

    A lineal or direct descendant, in legal usage, is a blood relative in the direct line of descent – the children, grandchildren, great-grandchildren, etc. of a person.In a legal procedure sense, lineal descent refers to the acquisition of estate by inheritance by parent from grandparent and by child from parent, whereas collateral descent refers to the acquisition of estate or real property ...

  8. Patrilineality - Wikipedia

    en.wikipedia.org/wiki/Patrilineality

    Patrilineality, also known as the male line, the spear side [1] or agnatic kinship, is a common kinship system in which an individual's family membership derives from and is recorded through their father's lineage.

  9. Descendant - Wikipedia

    en.wikipedia.org/wiki/Descendant

    Descendant(s) or descendent(s) may refer to: Lineal descendant , a consanguinous (i.e. biological) relative directly related to a person Collateral descendant , a relative descended from a brother or sister of an ancestor