International Standard Name Identifier was published on 15 March 2012. The ISO technical committee 46, subcommittee 9 (TC 46/SC 9) is responsible for the development of the standard. 2013-09-01 "INTERNATIONAL STANDARD ISO 27729:2012 TECHNICAL CORRIGENDUM 1" was published. The FAQ of the isni.org websites states "An ISNI is made up of 16 digits, the last character being a check character." In display it is frequently shown with spaces. The ISNI allows a single identity (such as an author's pseudonym or the imprint used by a publisher) to be identified using a unique number. This unique number can then be linked to any of the
15 (number) and unmarked straightedge, and cos is expressible in terms of square roots (see here). If a positive definite quadratic form with integer matrix represents all positive integers up to 15, then it represents all positive integers via the 15 and 290 theorems. 15 contains the decimal digits 1 and 5, and is the result of adding together the integers from 1 to 5 (1 + 2 + 3 + 4 + 5 = 15) The Hanbali Sunni madhab states that the age of fifteen of a solar or lunar calendar is when one's taklif (obligation or responsibility) begins and is