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  1. Main Page ‎(366,527 views)
  2. Create a Substepr user account ‎(50,770 views)
  3. Build an all-electric car ‎(20,358 views)
  4. Find the probability of a player being given exactly one ace in a Bridge deal ‎(20,258 views)
  5. Topics (listed alphabetically) ‎(19,881 views)
  6. Quantum field theory ‎(19,666 views)
  7. Create a new page in Substepr ‎(16,983 views)
  8. Use COMSOL Multiphysics to make a 2D simulation of Poiseuille flow ‎(14,738 views)
  9. Login to an existing Substepr user account ‎(13,317 views)
  10. Find the distribution of the number of observations until the value of the first observation is exceeded. ‎(12,090 views)
  11. Mathematics ‎(12,089 views)
  12. Calculate expectation values for \(x^4\) in state \(n\) using ladder operators ‎(11,315 views)
  13. Integrate using 'Integration by parts' ‎(9,931 views)
  14. How to get started with Substepr ‎(9,894 views)
  15. Contribute to an existing page in Substepr ‎(9,742 views)
  16. Find the probability that the larger of two iid samples exceeds the population median. ‎(9,154 views)
  17. Build the open source car suggested on www.theoscarproject.org ‎(7,943 views)
  18. Donor name or URL submission instructions ‎(7,454 views)
  19. A few words from the founder ‎(7,336 views)
  20. Contact us ‎(6,947 views)
  21. Top donors ‎(6,784 views)
  22. Physics ‎(6,705 views)
  23. Plan the construction of a modern-day pyramid as an open project hosted by Substepr ‎(6,630 views)
  24. Use the Trachtenberg speed system to multiply 98834 by 11 ‎(5,447 views)
  25. Use the Trachtenberg speed system to multiply 715624 by 11 ‎(5,266 views)
  26. Create something profound ‎(5,266 views)
  27. Trachtenberg speed system of basic mathematics ‎(5,016 views)
  28. Show that the scalar (or inner) product of position \(x\) and momentum \(p\) can be written as an exponential in terms of \(x\) and \(p\) ‎(5,002 views)
  29. Biology ‎(4,875 views)
  30. Show that the Holstein-Primakoff transformation satisfies the spin commutation relations ‎(4,869 views)
  31. Derive the equations of motion for a simple harmonic oscillator ‎(4,629 views)
  32. Use the Trachtenberg speed system of basic mathematics to multiply 443052 by 6 ‎(4,546 views)
  33. Engineering ‎(4,445 views)
  34. Use the Trachtenberg speed system to multiply 441362 by 11 ‎(4,434 views)
  35. Calculate expectation values for \(x^2\) in state \(n\) using ladder operators ‎(4,176 views)
  36. Find a fossil ‎(4,026 views)
  37. Use the Trachtenberg speed system to multiply 413 by 12 ‎(4,009 views)
  38. Show that if the lowering operator acts on a non-zero eigenstate of the number operator, the result is also an eigenstate of the number operator ‎(3,975 views)
  39. Quantise the coupled harmonic oscillator ‎(3,966 views)
  40. The Top Donors list ‎(3,939 views)
  41. Use the Bogoliubov transformation to diagonalise the BCS superconductivity Hamiltonian ‎(3,937 views)
  42. Chemistry ‎(3,866 views)
  43. Make a humanoid robot that can sprint faster than a human ‎(3,689 views)
  44. Computer science ‎(3,625 views)
  45. Use the mean field approximation to simplify the BCS superconductivity Hamiltonian ‎(3,585 views)
  46. Build a Reprap 3-dimensional printer ‎(3,512 views)
  47. Derive the variance of a uniform distribution. ‎(3,443 views)
  48. Make replica plates of a particular Petri dish ‎(3,442 views)
  49. Show that the bosonic commutation relations of the creation and annihilation operators are preserved by the Bogoliubov transformation ‎(3,391 views)
  50. Top users ‎(3,371 views)

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