Semigroup Theory - MAT00050M
- Department: Mathematics
- Credit value: 10 credits
- Credit level: M
- Academic year of delivery: 2022-23
Related modules
Additional information
Pre-requisite knowledge for MSc students: familiarity with and maturity in handling sets, functions, algebraic structures such as groups, rings and fields; knowledge of ideals and notions of divisibility in rings.
Module will run
Occurrence | Teaching period |
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A | Autumn Term 2022-23 |
Module aims
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To familiarise students with the elementary notions of semigroup theory.
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To illustrate abstract ideas by applying them to a range of concrete examples of semigroups.
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To study Green's relations and how these may be used to develop structure theorems for semigroups.
Module learning outcomes
At the end of the module you should be familiar with:
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The basic ideas of the subject, including Green’s relations, and be able to handle the algebra of semigroups in a comfortable way.
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The role of structure theorems, and be able to use Rees' theorem for completely 0-simple semigroups.
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Have an appreciation of the place of semigroup theory in mathematics.
Module content
Syllabus
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Examples of semigroups and monoids.
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Semigroups, ideals, homomorphisms and congruences.
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The essential difference between semigroups and previously studied algebraic structures.
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Green's relations, regular D-classes, Green's theorem that any H-class containing an idempotent is a subgroup.
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Completely 0-simple semigroups; Rees' theorem.
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Regular and inverse semigroups.
Indicative assessment
Task | % of module mark |
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Closed/in-person Exam (Centrally scheduled) | 100 |
Special assessment rules
None
Indicative reassessment
Task | % of module mark |
---|---|
Closed/in-person Exam (Centrally scheduled) | 100 |
Module feedback
Current Department policy on feedback is available in the student handbook. Coursework and examinations will be marked and returned in accordance with this policy.
Indicative reading
J M Howie, Fundamentals of Semigroup Theory, Oxford: Clarendon Press (S 2.86 HOW)