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

2019 Center for Cryptologic History Symposium

2018 KYMAA

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

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

US Navy Elementary Course in Cryptanalysis

**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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