PlanetMath (more info)
 Math for the people, by the people. Sponsor PlanetMath
Encyclopedia | Requests | Forums | Docs | Wiki | Random | RSS  
Login
create new user
name:
pass:
forget your password?
Main Menu
sections
Encyclopædia
Papers
Books
Expositions

meta
Requests (236)
Orphanage
Unclass'd (1)
Unproven (540)
Corrections (47)
Classification

talkback
Polls
Forums
Feedback
Bug Reports

downloads
Snapshots
PM Book

information
News
Docs
Wiki
ChangeLog
TODO List
Copyright
About
References to 'opposite'
1. $x^4-y^4=z^2$ has no solutions in positive integers by rm50
2. alternate proof of parallelogram law by drini
3. angle bisector by giri
4. angle multiplication and division formulae for tangent by rspuzio
5. antipodal isothermic points by pahio
6. barycentric subdivision by CWoo
7. betweenness in rays by CWoo
8. cosines law by drini
9. cyclic quadrilateral by drini
10. Dedekind cuts by rmilson
11. derivation of 2D reflection matrix by stevecheng
12. directed segment by drini
13. elementary symmetric polynomial in terms of power sums by rspuzio
14. equiangular triangle by Wkbj79
15. equitable matrix for money exchange by mathforever
16. Fibonacci jigsaw puzzle by PrimeFan
17. finite projective plane by Mathprof
18. formal power series as inverse limits by rspuzio
19. Hamiltonian quaternions by mathcam
20. height by Mathprof
21. Hopf algebra by mhale
22. intuitionistic logic by gribskoff
23. kite by yark
24. Klein 4-group by Algeboy
25. lengths of angle bisectors by pahio
26. median by CWoo
27. Mollweide's equations by mathwizard
28. mutual positions of vectors by pahio
29. neutrosophic probability by para0doxa
30. opposing angles in a cyclic quadrilateral are supplementary by rm50
31. opposite ring by antizeus
32. parallelogram by drini
33. path integral by slider142
34. pentagon by rspuzio
35. perspective drawing by stevecheng
36. proof of butterfly theorem by drini
37. proof of Simson's line by giri
38. proof of the uniformization theorem by Simone
39. quadratic curves by pahio
40. ray by CWoo
41. rearrangement inequality by drini
42. rectangle by drini
43. regular triangle by Wkbj79
44. Riemann surface by PrimeFan
45. sines law by drini
46. sohcahtoa by Wkbj79
47. solutions of $1+x+x^2+x^3=y^2$ by rm50
48. square root of 3 by PrimeFan
49. stable marriage problem by mps
50. tangents law by giri
51. tetrahedron by rspuzio