A History of Mathematics |
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Page 8
... abacus . Among the races of middle Asia , even as far as China , the abacus is as old as fable . Now , Babylon was once a great commercial centre , the metropolis of many nations , and it is , therefore , not unreasonable to suppose ...
... abacus . Among the races of middle Asia , even as far as China , the abacus is as old as fable . Now , Babylon was once a great commercial centre , the metropolis of many nations , and it is , therefore , not unreasonable to suppose ...
Page 63
... abacus , as it is called , existed among different peoples and at different times , in various stages of perfection . An abacus is still employed by the Chinese under the name of Swan - pan . We possess no specific information as to how ...
... abacus , as it is called , existed among different peoples and at different times , in various stages of perfection . An abacus is still employed by the Chinese under the name of Swan - pan . We possess no specific information as to how ...
Page 65
... abacus . Expert mathematicians may have used the symbols . Thus Eutocius , a commentator of the sixth century after Christ , gives a great many multipli- cations of which the following is a specimen : - 8 αξε σξε 265 265 a MMB , α 40000 ...
... abacus . Expert mathematicians may have used the symbols . Thus Eutocius , a commentator of the sixth century after Christ , gives a great many multipli- cations of which the following is a specimen : - 8 αξε σξε 265 265 a MMB , α 40000 ...
Page 78
... abacus , and by tables prepared for the purpose . Finger - symbolism was known as early as the time of King Numa , for he had erected , says Pliny , a statue of the double - faced Janus , of which the fingers indicated 365 ( 355 ...
... abacus , and by tables prepared for the purpose . Finger - symbolism was known as early as the time of King Numa , for he had erected , says Pliny , a statue of the double - faced Janus , of which the fingers indicated 365 ( 355 ...
Page 79
... abacus quite easily , but in multiplication the abacus could be used only for adding the particular products , and in division for performing the subtractions occurring in the process . Doubtless at this point recourse was made to ...
... abacus quite easily , but in multiplication the abacus could be used only for adding the particular products , and in division for performing the subtractions occurring in the process . Doubtless at this point recourse was made to ...
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Popular passages
Page 292 - THEOREM. If a straight line, falling on two other straight lines, make the alternate angles equal to each other ; these two straight lines shall be parallel.
Page 13 - The formula states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the base and altitude.
Page 90 - In an inscribed quadrilateral, the product of the diagonals is equal to the sum of the products of the opposite sides.
Page 419 - FERRERS.— AN ELEMENTARY TREATISE on TRILINEAR CO-ORDINATES, the Method of Reciprocal Polars, and the Theory of Projections. By the Rev. NM FERRERS, MA, Fellow and Tutor of Gonville and Caius College, Cambridge.