Autumn 2015
Instructor: Sergei Chmutov
Classes: Monday, Tuesday, Wednesday, Thursday, Friday
10:20 - 11:15 am
at Journalism Bldg 274.
Office hours: Monday, Wednesday, 11:30 am - 12:30 pm
TEXTBOOKS:
Additional books:
Grading:
There will be weekly homework assignments (25%), two midterms (25% each), and a final exam
(25%).
GRADING SCALE:
A | A- | B+ | B | B- | C+ | C | C- | D+ | D |
90 | 87 | 83 | 80 | 77 | 73 | 70 | 67 | 63 | 60 |
COURSE PROGRAM:
1. Vector spaces (2 weeks).
     
Linear dependence and independence. Subspaces. Bases and dimensions.
      Vector spaces associated with a
matrix: Row space, Column space, Null space.
      Systems of linear equations. Gaussian
elimination. Echelon form. Rank.
      Operations on vector spaces: sum, direct
sum, quotient space, dual space.
2. Linear transformations (1 week).
     
Matrices. Multiplication.Inverse transformation and its matrix.
      Elementary matrices and an algorithm
of finding the inverse matrix.
      Change of basis formulas. Kernel and
Image.
3. Ordinary differential equations (1 week).
     
1-st order linear ODEs. 2-nd order linear ODEs with constant
coefficients.
4. Determinants (2 weeks).
     
Permutations: product, inverse, sign, diagrams. Expansion over
permutations.
      Determinants of product, transpose,
inverse. Row and column expansions.
      Inverse matrix. Cramer's rule.
Van der Monde and Cauchy determinants.
      Laplace expansion. Binet--Cauchy formula.
Resultant.
5. Linear operators (3 weeks).
     
Eigenvalue and eigenvectors. Characteristic and minimal polynomials.
      Invariant subspaces. Cayley-Hamilton
theorem. Jordan normal form theorem
      and its proof. Elementary divisors.
Exponent of a matrix.
6. ODEs (2 weeks).
     
Separable equations. Exact equations and (deRham) cohomology.
Picard's
      successive approximation for the existence
and uniqueness theorems. Systems
      of first order ODEs. Exponent of a
matrix again. Autonomous sytems. Phase plane,
      phase portrait, singular points.
Nodes, Saddles, Foci, Centers. Stability.
7. Bilinear forms and inner product (3 weeks).
     
Matrices. Symmetric and skew symmetric forms. Positive definite
forms and
      euclidean spaces. Length and angles.
Couchy-Schwarz and triangle inequalities.
      Gram-Schmidt orthogonalization. Normal
forms, signature, and Sylvester's inertia
      theorem. Gram matrix, distance to the
subspace. Volume of a parallelepiped.
      Orthogonal and self-adjoint operators.
Principal axis theorem. Hermitian spaces.
      Unitary and hermitian operators.
8. Multilinear algebra (1 week).
     
Multilinear maps. Tensors. Tensor product of vector spaces.
Tensors of type (p,q).
      Contraction.