Chris Christensen

Professor of Mathematics


Department of Mathematics and Statistics
Northern Kentucky University
Highland Heights, KY 41099

Office MP 437

859-572-6672
FAX: 859-572-6097

christensen@nku.edu

 

2019 Center for Cryptologic History Symposium

            Genevieve Grotjan's Discovery

 

2018 KYMAA

            T. R. Hollcroft's problem

 

2017 Cryptologic History Symposium

            The evolving relationship between mathematics and cryptology: 1951 - 1952

            The evolution of JN-25 and attacks on it

 

2017 Midwest History of Mathematics Conference

            What are the Mystery Digits?

                       

Here’s an updated VBreaker and Vandal by JC Snider https://jcsnider.github.io/VBreaker-JS/#

 

US Navy Elementary Course in Cryptanalysis

JN-25

Fruit

 

 

Classes

Fall 2019

Office hours:  M 10:00 – 11:00, T 9:00 – 10:00, W 8:00 – 8:50, R 9:00 – 10:00, F 10:00 - 11:00, by appointment, and by capture.

 

Here are copies of syllabi and other material for MAT 128 - 001 Calculus A.  This class meets MWF 9:00 – 9:50 in MP 312.

 

Here are copies of syllabi and other material for MAT 229 - 002 Calculus II.  This class meets M 2:00 – 2:50, T 1:40 – 2:55, W 2:00 – 2:50, R 1:40 – 2:55 in MP 316.

 

Here are copies of syllabi and other material for CSC/MAT 483 - 001 Cryptology.  This class meets MWF 1:00 – 1:50 in MP 312.

 

 

Spring 2019

Office hours:  M 8:30 – 9:30, T 8:00 – 9:00, W 8:30 – 9:30, R 8:00 – 9:00, F 8:30 – 9:30.

 

Here are copies of syllabi and other material for MAT 129 - 001 Calculus I.  This class meets M 10:00 – 10:50 and TR 9:25 – 10:40 in MP 312.

 

Here are copies of syllabi and other material for MAT 129 - 003 Calculus I.  This class meets MW 2:00 – 3:15 and F 2:00 – 2:50 in MP 316.

 

Here are copies of syllabi and other materials for MAT 234 - 001 Linear Algebra.  This class meets MWF 11:00 – 11:50 in MP 323.

 

Here are copies of syllabi and other material for MAT 415 - 001 Abstract Algebra II.  This class meets MWF 1:00 – 1:50 in MP 325.

 

 

Fall 2018

Office hours:  M 2:00 – 3:00, T 8:00 – 9:00, W 8:30 – 9:30, R 8:00 – 9:00, and F 8:30 – 9:30.

 

Here are copies of syllabi and other material for MAT 119 - 005 Precalculus .  This class meets TR 12:15 – 1:30 in MP 325.

 

Here are copies of syllabi and other material for MAT 129 - 001 Calculus I .  This class meets M 9:00 – 9:50 and TR 9:25 – 10:40 in MP 316.

 

Here are copies of syllabi and other material for MAT 410 - 001 Abstract Algebra I .  This class meets MWF 10:00 – 10:50 in MP 467.

 

Spring 2018

Office hours:  M 9:30 – 10:30, T 9:30 – 10:30, W 8:30 – 9:30, R 9:30 – 10:30, and F 9:30 – 10:30.

Here are copies of syllabi and other materials for MAT 129 - 003 Calculus I.  This class meets M 1:00 – 1:50, T 1:40 – 2:55, and R 1:40 – 2:55 in MP 312.

Here are copies of syllabi and other materials for MAT 229 - 001 Calculus II.  This class meets M 8:00 – 8:50, T 8:00 – 9:15, R 8:00 – 9:15, and F 8:00 – 8:50 in MP 314.

Here are copies of syllabi and other materials for CSC/MAT 483 – 001 Cryptology.  This class meets MWF 12:00 – 12:50 in MP 312.

 

Fall 2017

Office hours:  M 10:00 – 10:50, T 8:00 – 9:00, W 8:30 – 9:30, R 8:00 – 9:00, and F 10:00 – 10:50.

Here are copies of syllabi and other materials for MAT 128 - 001 Calculus A.  This class meets MWF 1:00 – 1:50 in MP 312.

Here are copies of syllabi and other materials for MAT 229 - 002 Calculus II.  This class meets M 9:00 – 9:50, T 9:25 – 10:40, R 9:25 – 10:40, and F 9:00 – 9:50 in MP 312.

Here are copies of syllabi and other materials for MAT 329 - 001 Calculus III.  This class meets M 12:00 – 12:50, T 12:15 – 1:30, and R 12:15 – 1:30 in MP 314.

 

Spring 2017

Office hours: M 11:00 – 11:50, T 9:30 – 10:30, W 2:00 – 3:00, R 1:00 – 2:00, and F 11:00 – 11:50.

Here are copies of syllabi and other materials for MAT 119 - 003 Precalculus.  This class meets TR 8:00 – 9:15 in MP 325.

Here are copies of syllabi and other materials for MAT 119 - 004 Precalculus.  This class meets TR 10:50 – 12:05 in MP 323.

Here are copies of syllabi and other materials for MAT 234 - 001 Linear Algebra.  This class meets MWF 10:00 – 10:50 in MP 323.

Here are copies of syllabi and other materials for MAT 310 - 001 Elementary Theory of Numbers.  This class meets MWF 12:00 – 12:50 in MP 461.

 

Fall 2016

Office hours:  M 10:00 – 10:50, T 9:30 – 10:30, W 1:00 – 2:00, R 8:30 – 9:30, F 10:00 – 11:00 in MP 437.

Here are copies of syllabi and other materials for MAT 129 - 003 Calculus I.  This class meets M 11:00 – 11:50 and TR 10:50 – 12:05 in MP 312.

Here are copies of syllabi and other materials for MAT 234 - 001 Linear Algebra.  This class meets MWF 8:00 – 8:50 in MP 325.

Here are copies of syllabi and other materials for HNR 304 - 001 Cryptology.  This class meets TR 1:40 – 2:55 in HR 101.

Here are copies of syllabi and other materials for CSC/MAT 483 - 001 Cryptology.  This class meets MWF 9:00 – 9:50 in MP 325.

 

Spring 2016

Office hours:  M 8:30 – 9:30, T 9:30 – 10:30, W 1:00 – 1:50, R 9:30 – 10:30, and F 8:30 – 9:30 in MP 437.

Here are copies of syllabi and other materials for MAT 185 - 001.  This class meets MWF 10:00 – 10:50 in MP 312.

Here are copies of syllabi and other materials for MAT 185 - 002.  This class meets MWF 12:00 – 12:50 in MP 312.

Here are copies of syllabi and other materials for MAT 584 - 001.  This class meets TR 10:50 – 12:05 in MP 467.

 

Fall 2015

Office hours:  M 2:15 – 3:15, T 9:30 – 10:30, W 2:15 – 3:15, R 9:30 – 10:30, and F 10:00 – 11:00 in MP 437.

Here are copies of syllabi and other materials for Calculus I MAT 129 - 002 .  This class meets M 8:00 – 8:50 and TR 8:00 – 9:15 in BP 316.

Here are copies of assignments, syllabi, and other materials for Introductory Discrete Mathematics MAT 185 - 001 .  This class meets MW 3:25 – 4:40 in MP 325.

Here are copies of assignments, syllabi, and other materials for Introductory Discrete Mathematics MAT 185 - 002 .  This class meets TR 12:15 – 1:30 in MP 316.

Here are copies of syllabi and other materials for Calculus C MAT 228 - 001 .  This class meets MWF 1:00 – 1:50 in BP 325.

Here are copies of syllabi and other materials for Cryptology MAT 499 - 001.  This class meets TR 10:50 – 12:05 in BP 152.

 

Spring 2015

Office hours:  M 8:00 -9:00, T 10:00 – 11:00, W 9:00 – 10:00, R 10:00 – 11:00, and F 9:00 – 10:00 in MP 437.

Here are copies of assignments, syllabi, and other materials for Calculus II  MAT 229 - 003.  This class meets T 8:00 – 9:15, W 8:00 – 8:50, R 8:00 – 9:15, and F 8:00 – 8:50 in MP 304.

Here are copies of syllabi and other materials for Abstract Algebra II  MAT 415 - 001 .  This class meets MWF 11:00 – 11:50 in BP 467.

Here are copies of syllabi and other materials for Cryptology CSC/MAT 483 - 001.  This class meets MWF 12:00 – 12:50 in BP 467.

 

Fall 2014

Office hours:  M 1:30 – 2:30, TWRF 10:00 – 1050 in MP 437.

Here are copies of assignments, syllabi, and other materials for Calculus I  MAT 129 - 004 .  This class meets TR 1:40 – 2:55 and F 2:00 – 2:50 in MP 314.

Here are copies of assignments, syllabi, and other materials for Calculus III  MAT 329 - 002 .  This class meets TR 12:15 – 1:30 in MP 314 and F 12:00 – 12:50 in MP 325.

Here are copies of syllabi and other materials for Abstract Algebra MAT 410 - 001.  This class meets MWF 11:00 – 11:50 in BP 467.

 

Spring 2014

Here are copies of assignments, syllabi, and other materials for Precalculus MAT 119 - 001 .  This class meets MWF 8:00 – 8:50 in MP 325.

Here are copies of assignments, syllabi, and other materials for Calculus I MAT 129 - 003.  This class meets M 1:00 – 1:50 and TR 1:40 – 2:55 in MP 314.

Here are copies of assignments, syllabi, and other materials for Calculus III MAT 329 - 001.  This class meets TR 9:25 – 10:40 and F 9:00 – 9:50 in MP 312.

 

Fall 2013

Here are copies of assignments, syllabi, and other materials for Calculus I MAT 129 - 005/115L.  This class meets TR 12:15 – 1:30 and F 12:00 – 12:50 in MP 312.

Here are copies of assignments, syllabi, and other materials for Calculus II MAT 229 - 001.  This class meets MW 9:00 – 9:50 and TR 9:25 – 10:40 in MP 325.

Here are copies of assignments, syllabi, and other materials for Cryptology CSC/MAT 483 - 001.  This class meets MWF 10:00 – 10:50 in MP 467.

 

Summer 2013

Here are copies of assignments, syllabus, and other materials for Calculus I MAT 129 - 001 .  This class meets MTWR 9:30 – 11:20, 3 June – 25 July, in MP 325.

 

Fall 2012

Here are copies of assignments, syllabi, and other materials for Precalculus MAT 119 - 002.  This class meets MWF 11:00 – 11:50 in MP 325.

Here are copies of assignments, syllabi, and other materials for Calculus II MAT 229 - 001.  This class meets MW 9:00 – 9:50 and TR 9:25 – 10:40 in MP 325.

Here are copies of assignments, syllabi, and other materials for Calculus III MAT 329 - 001.  This class meets TR 12:15 – 1:30 in MP 314 and F 12:00 – 12:50 in

MP 325.

 

Summer 2012

Here are copies of assignments, syllabi, and other materials for Calculus I MAT 129 - 001.  This class meets MTWR 9:30 – 11:20 in MP 467.

 

Spring 2012

Here are copies of assignments, syllabi, and other materials for the following courses:

Calculus II MAT 229 - 003.  This class meets TR 8:00 – 9:15 and WF 8:00 – 8:50 in MP 467.

Cryptology: The Evolution of Secrecy HNR 304 - 001.  This class meets TR 12:15 – 1:30 in HR 111.

Cryptology CSC/MAT 483 - 001.  This class meets MW 3:35 – 4:40 in MP 467.

 

Fall 2011

Here are copies of assignments, syllabi, and other materials for the following courses:

Precalculus MAT 119 - 003.  This class meets TR 10:50 – 12:05 in MP 325.

Calculus II MAT 229 - 001.  This class meets MW 9:00 – 9:50 and TR 9:25 – 10:40 in MP 325.

Introduction to Higher Mathematics  MAT 302 - 001. This class meets MW 2:00 – 3:15 in MP 467.

 

Summer 2011

Here are copies of assignments, syllabi, and other materials for the following course:

Calculus 1   MAT 129 - 001.  This class meets MTWR 9:30 – 11:20 in NH 402.

 

Spring 2011

Here are copies of assignments, syllabi, and other materials for the following courses:

Calculus I MAT 129 - 002.  This class meets TR 10:50 – 12:05 in ST 248 and F 11:00 – 11:50 in ST 249.

Calculus I MAT 129 - 003.  This class meets M 1:00 – 1:50 and TR 1:40 – 2:55 in ST 251.

Cryptography CSC/MAT 584 - 001.  This class meets TR 6:15 – 7:30 in ST 247.

 

 

Fall 2010

Here are copies of assignments, syllabi, and other materials for the following courses:

Precalculus  MAT 119 - 002.  This class meets MWF 11:00 – 11:50 in ST 247.

Calculus II  MAT 229 - 002.  This class meets MW 12:00 – 12:50 and TR 12:15 – 1:30 in ST 251.

Linear Algebra MAT 234 - 001.  This class meets MW 4:50 – 6:05 in ST 251.

 

Spring 2010

Here are assignments, syllabi, and other materials for the following courses:

Calculus II MAT 229 - 001.  This class meets M 9:00 – 9:50, T 9:25 – 10:40, W 9:00 – 9:50, and R 9:25 – 10:40 in ST 248.

(Honors seminar) Cryptology  HNR 304 - 002.  This class meets TR 1:40 – 2:55 in HR 111.

Cryptology  CSC/MAT 483 - 001.  This class meets MWF 12:00 – 12:50 in ST 254.

 

Fall 2009

Here are assignments, syllabi, and other materials for the following courses:

Calculus I MAT 129 - 002.  This class meets M 11:00 – 11:50, T 10:50 – 12:05, and R 10:50 – 12:05 in ST 251.

Calculus I MAT 129 - 003.  This class meets M 1:00 – 1:50, W 12:00 – 1:50, and F 1:00 – 1:50 in ST 251.

Linear Algebra MAT 234 - 001.  This class meets MW 4:50 – 6:05 in ST 247.

 

 

 

 

 

To send questions or to get more information: christensen@nku.edu 

 

 

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