Monographs on Topics of Modern Mathematics: Relevant to the Elementary Field |
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Common terms and phrases
addition algebra applied Assumption called circle coefficients common complex congruent conic consider construct contains continuous corresponding curve defined definition denoted determined distance divided division domain draw elementary elements equal equation evident example exists expressed fact factor figure follows formula four function fundamental geometry given greater Hence imaginary important infinitely integral intersect interval joining known least less Lobachevskian mathematical means meet method multiple obtained operations opposite pairs parallel pass perpendicular plane positive possible postulates present prime problem projective proof properties propositions proved quantities range rational rays regards region relation represent respectively right angles root satisfy segment sides solution square statement straight line substitutions symbol Theorem theory triangle true uniquely unknowns values zero
Popular passages
Page 93 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.
Page 83 - The points of intersection of the three pairs of opposite sides of a hexagon inscribed in a conic lie on one straight line.
Page 41 - If one side of a triangle be produced, the exterior angle is greater than either of the interior, and opposite angles.
Page 32 - SSS); two sides and the included angle of one triangle are congruent to the corresponding parts...
Page 259 - A sufficient condition for the maximum number of imaginary roots of an equation of the nth degree,
Page 251 - In this way we obtain one and only one value for each of the unknowns x\, . . . , xr. The preceding considerations prove the following theorem: A necessary and sufficient condition for a system of linear equations to be consistent is that the matrix of the system has the same rank as the augmented matrix. Since the values assigned to...
Page 354 - A proposed construction is possible by ruler and compasses if, and only if, the numbers which define analytically the desired geometric elements can be derived from those defining the given elements by a finite number of rational operations and extractions of real square roots.
Page 111 - B', B, or B" according as KD is less than, equal to, L FIG. 18. B'B B" AB FIG. 19. or greater than LB. In these three cases 2^D is greater than, equal to, or less than, 2ħB respectively. Hence: Each summit angle of an isosceles birectangular quadrilateral is less than, equal to, or greater than, a right angle, according as the summit of the quadrilateral is greater than, equal to, or less than, the base. 18. In the Euclidean geometry each summit angle of an isosceles birectangular quadrilateral...
Page 398 - Ten decimals are sufficient to give the circumference of the earth to the fraction of an inch, and thirty decimals would give the circumference of the whole visible universe to a quantity imperceptible with the most powerful microscope.
Page 98 - If two lines are parallel to a third, they are parallel to each other. We distinguish two cases according as the third line lies between the two lines or not. In the first case, let AK and DQ (Fig. 4) be each parallel to ML. We wish to prove that AK is parallel to DQ. Draw FIG. 4. FIG. 5. AC any line through A in the angle opening DAK. AC will meet ML in some point F since AK is parallel to ML. CF produced will also meet DQ, since ML and DQ are parallel. Hence any line through A in the angle opening...
Bibliographic information
| Title | Monographs on Topics of Modern Mathematics: Relevant to the Elementary Field |
| Editor | Jacob William Albert Young |
| Publisher | Longmans, Green, and Company, 1911 |
| Original from | Harvard University |
| Digitized | 28 Jul 2007 |
| Length | 416 pages |
| Export Citation | BiBTeX EndNote RefMan |