TY - BOOK AU - Takloo-Bighash,Ramin TI - A Pythagorean introduction to number theory: right triangles, sums of squares, and arithmetic T2 - Undergraduate Texts in Mathematics, SN - 9783030026042 AV - QA241 .T35 2018 U1 - 512.7 23 PY - 2018///] CY - Cham, Switzerland PB - Springer KW - Number theory KW - Pythagorean theorem KW - Number Theory KW - fast KW - Electronic books N1 - Academic; Part I Foundational Material -- 1. Introduction -- 2. Basic number theory -- 3. Integral solutions to the Pythagorean Equation -- 4. What integers are areas of right triangles? -- 5. What numbers are the edges of a right triangle? -- 6. Primes of the form 4k+1 -- 7. Gauss sums, Quadratic Reciprocity, and the Jacobi symbol -- Part II Advanced Topics -- 8. Counting Pythagorean triples modulo an integer -- 9. How many lattice points are there on a circle or a sphere? -- 10. What about geometry? -- 11. Another proof of the four squares theorem -- 12. Quadratic forms and sums of squares -- 13. How many Pythagorean triples are there? -- 14. How are rational points distributed, really? -- Part III Appendices -- A. Background -- B. Algebraic integers -- C. SageMath -- References -- Index; Legal Deposit; Only available on premises controlled by the deposit library and to one user at any one time; The Legal Deposit Libraries (Non-Print Works) Regulations (UK) UR - https://online.fliphtml5.com/lluzx/dkxj/ ER -