Skip to the content

Source document. This page reproduces the syllabus this course was written to, as published — its semesters, credits and paper numbers are that document’s, not this site’s. The course itself is studied on its own, in any order.

This page reproduces the prescribed outline for the paper, so that the teaching pages can be checked against it line by line. It is the syllabus, not a summary of it. Nothing about marks, duration or examination pattern appears on this site.

Course Objectives

  1. To understand the measure theory concepts and their usage in probability.
  2. To understand the basic principles of the theory of probability.
  3. To understand the concepts of convergence of random variables.

Course Outcomes

  1. Able to solve the problems in probability and probability models.
  2. Able to solve the problems on distribution function, conditional expectation, characteristic function, convergence of sequence of the random variables.
  3. Able to obtain the probability bounds using probability inequalities for the given random variables and identifying their real time usage applications.
  4. To study convergence properties of the sequence of random variables based on its probability laws.

Stated Pre-requisite

ASSUMED BEFORE THIS PAPER

Probability concepts: classical, statistical and axiomatic definitions; joint, marginal and conditional probabilities; compound, addition and Bayes theorems and problems on probability.

All of this is covered in the undergraduate course Theory of Probability and Mathematical Expectations on this site.

Unit I

AS PRESCRIBED

Measure theory: classes of sets, fields, sigma-fields, minimal sigma-fields, Borel sigma-fields in R. Measure, properties of a measure, measurable function, statements and applications of Carathéodory extension theorem, monotone and dominated convergence theorems and Fatou's lemma. Probability as a measure. Random variables, distribution function and its properties and their applications.

→ Unit 1 notes

Unit II

AS PRESCRIBED

Mathematical expectation and expectations of functions of random variables and their applications. Conditional expectation and conditional variance and their applications. Characteristic function and its properties, uniqueness, inversion and continuity theorems and their application problems. Identification of functions which are / are not characteristic functions.

Probability and moment inequalities: Chebychev's, Markov, Cauchy–Schwartz, Holder, Minkowsky, Liapunov and Jensen inequalities. Interrelationships among the inequalities and their applications and simple problems on these inequalities.

→ Unit 2 notes

Unit III

AS PRESCRIBED

Sequence of random variables: convergence of sequence of random variables — law, probability, almost sure and quadratic mean; their implications, counter implications, Slutzky's theorem. Applications of various modes of convergences and their related problems. Borel–Cantelli lemma; Borel 0-1 law. Statement of Glivenko–Cantelli lemma.

→ Unit 3 notes

Unit IV

AS PRESCRIBED

Weak and strong law of large numbers (WLLN): Bernoulli, Chebychev's and Khintchine's WLLNs. Kolmogorov inequality. Borel's SLLNs. Kolmogorov's SLLNs for independent random variables and i.i.d. random variables, applications of LLN and their related problems. Central limit theorems: Demoivre–Laplace form of CLT, Levy–Lindeberg form of CLT, Liapunov's form of CLT and Lindberg–Feller form of CLT and their application related problems.

→ Unit 4 notes

References

  1. Basu, A. K. (2012): Measure Theory and Probability, PHI, 2nd edition.
  2. Ross, S. M. (2003): Introduction to Probability Models, 8th edition, Academic Press.
  3. Bhat, B. R. (1985): Modern Probability Theory, Wiley Eastern.
  4. Rohatgi, V. K. (1993): An Introduction to Probability Theory and Mathematical Statistics, Wiley Eastern.