In chess.................the queen is the most powerful piece.............but which queen is it Dorthy.........the wicked witch of the East......................................??????   Or the white queen in Alice in Wonderland?  Either way it is a barbie _________......

1. Number theory or arithmetic ^[note 1] is a branch of pure mathematics devoted primarily to the study of the natural numbers and the integers. It is sometimes called "The Queen of Mathematics" because of its foundational place in the discipline.

   Number theory - Wikipedia, the free encyclopedia

   https://en.wikipedia.org/wiki/Number_theory

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Number theory - Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Number_theory

Wikipedia

Number theory or arithmetic ^[note 1] is a branch of pure mathematics devoted primarily to the study of the natural numbers and the integers. It is sometimes called "The Queen of Mathematics" because of its foundational place in the discipline.

‎Pure mathematics - ‎List of number theory topics - ‎Diophantine equation

[PDF]What Is Number Theory? - Brown Math Department

https://www.math.brown.edu/~jhs/frintch1ch6.pdf

Brown University

Number theory is the study of the set of positive whole numbers. 1,2,3,4,5,6,7,... ... The main goal of number theory is to discover interesting and unexpected rela-.

number theory | mathematics | Britannica.com

www.britannica.com/topic/number-theory

Encyclopaedia Britannica

Number theory, branch of mathematics concerned with properties of the positive integers (1, 2, 3, …). Sometimes called “higher arithmetic,” it is among the oldest and most natural of mathematical pursuits. Number theory has always fascinated amateurs as well as professional mathematicians.