Mark Meretzky

Still to do: many of the links on this new server are broken. Must change to

Answers to A Book of Abstract Algebra, 2nd ed. by Charles C. Pinter

  1. Chapter 1: Wht Abstract Algebra?
  2. Chapter 2: Operations
  3. Chapter 3: The Definition of Groups
  4. Chapter 4: The Elementary Properties of Groups
  5. Chapter 5: Subgroups
  6. Chapter 6: Functions
  7. Chapter 7: Groups of Permutations
  8. Chapter 8: Permutations of a Finite Set
  9. Chapter 9: Isomorphism
  10. Chapter 10: Order of Group Elements
  11. Chapter 11: Cyclic Groups
  12. Chapter 12: Partitions and Equivalence Relations
  13. Chapter 13: Couting Cosets
  14. Chapter 14: Homomorphisms
  15. Chapter 15: Quotient Groups
  16. Chapter 16: The Fundamental Homomorphism Theorem
  17. Chapter 17: Rings: Definitions and Elementary Properties
  18. Chapter 18: Ideals and Homomorphisms
  19. Chapter 19: Quotient Rings
  20. Chapter 20: Integral Domains
  21. Chapter 21: The Integers
  22. Chapter 22: Factoring into Primes
  23. Chapter 23: Elements of Number Theory (Optional)
  24. Chapter 24: Rings of Polynomials
  25. Chapter 25: Factoring Polynomials
  26. Chapter 26: Substitution in Polynomials
  27. Chapter 27: Extensions of Fields
  28. Chapter 28: Vector Spaces
  29. Chapter 29: Degrees of Field Extensions
  30. Chapter 30: Ruler and Compass
  31. Chapter 31: Galois Theorey: Preamble
  32. Chapter 32: Galois Theorey: The Heart of the Matter
  33. Chapter 33: Solving Equations by Radicals

Courses that Mark is teaching in Fall 2018 at NYU SPS Info Tech

Other courses Mark has taught at NYU SPS Info Tech

Courses that Mark has taught at Pace University

Courses that Mark teaches at DevCon5

Courses that Mark teaches at QCon

Contact information

How to do things on

The “secure shell”

To log into, you need a client that speaks the “Secure Shell” protocol. For Windows, get PuTTY from its own website, or from the NYU website, or from the free ITS NYU-NET CD at one of the computer labs. For Unix, get ssh. There’s even an O’Reilly book about ssh.


  1. Open GL
  2. GTK


Planetarium Operator

Mark was also one of the operators of the Andrus Planetarium at the Hudson River Museum of Westchester.

People and things that Mark likes