Module Handbook

  • Dynamischer Default-Fachbereich geändert auf MAT

Module MAT-40-29-M-4

Quadratic Number Fields (M, 4.5 LP)

Module Identification

Module Number Module Name CP (Effort)
MAT-40-29-M-4 Quadratic Number Fields 4.5 CP (135 h)


CP, Effort 4.5 CP = 135 h
Position of the semester 1 Sem. irreg. SuSe
Level [4] Bachelor (Specialization)
Language [EN] English
Module Manager
Area of study [MAT-AGCA] Algebra, Geometry and Computer Algebra
Reference course of study [MAT-88.105-SG] M.Sc. Mathematics
Livecycle-State [NORM] Active


Without a proof of successful participation in the exercise classes, only 3 credit points will be awarded for the module.


Type/SWS Course Number Title Choice in
Presence-Time /
SL SL is
required for exa.
PL CP Sem.
2V+1U MAT-40-29-K-4
Quadratic Number Fields
P 42 h 93 h
- PL1 4.5 irreg. SuSe
  • About [MAT-40-29-K-4]: Title: "Quadratic Number Fields"; Presence-Time: 42 h; Self-Study: 93 h
  • About [MAT-40-29-K-4]: The study achievement "[U-Schein] proof of successful participation in the exercise classes (ungraded)" must be obtained.

Examination achievement PL1

  • Form of examination: oral examination (20-30 Min.)
  • Examination Frequency: each semester
  • Examination number: 84138 ("Quadratic Number Fields")

Evaluation of grades

The grade of the module examination is also the module grade.


  • structure of imaginary quadratic number fields,
  • ideals and ideal class groups,
  • Ideals as geometric lattices,
  • finiteness of the ideal class group.

Competencies / intended learning achievements

Upon completion of this module, the students have studied the extension of a number system through quadratic number fields which is fundamental for number theory. They also have studied the rings contained in quadratic number fields as well as their main properties and some simple applications. They are able to name and to prove the essential statements of the lecture as well as to classify and to explain the connections.

By completing the given exercises, the students have developed a skilled, precise and independent handling of the terms, propositions and techniques taught in the lecture. In addition, they have learnt how to apply these techniques to new problems, analyze them and develop solution strategies independently or by team work.


  • I.N. Stewart, D.O. Tall: Algebraic Number Theory,
  • M. Trifković: Algebraic Theory of Quadratic Numbers.


Registration for the exercise classes via the online administration system URM (

Requirements for attendance of the module (informal)

More advanced knowledge from the courses [MAT-12-22-K-3] and [MAT-12-21-K-3] is useful but not necessarily required.



Requirements for attendance of the module (formal)


References to Module / Module Number [MAT-40-29-M-4]

Course of Study Section Choice/Obligation
[INF-88.79-SG] M.Sc. Computer Science [Core Modules (non specialised)] Formal Fundamentals [WP] Compulsory Elective
[MAT-88.105-SG] M.Sc. Mathematics [Core Modules (non specialised)] Pure Mathematics [WP] Compulsory Elective
[MAT-88.706-SG] M.Sc. Mathematics International [Core Modules (non specialised)] Pure Mathematics [WP] Compulsory Elective
Module-Pool Name
[MAT-GM-MPOOL-5] General Mathematics (Introductory Modules M.Sc.)