- Feb 2013: talk for undergraduates on Sage
- Jan 2013: Madison Wisconsin -- plots for number theory seminar on the Explicit Formula
- Jan 10, 2013:
*p*-adic BSD for GL_{2}-type Abelian Varieties, and the screencast - Jan 10, 2013: How explicit is the Explicit Formula? (with Barry Mazur)
- Dec 2012: Web-based Notebooks (talk at ICERM)
- Oct 10, 2012: Sage at SACNAS 2012
- Oct 4, 2012: Salvus: Distributed Scalable Online Mathematical Software
- Elliptic Curves Over F=QQ(sqrt(5)) -- ANTS X and the screencast
- The Research Software Ecology in Pure Mathematics
- Elliptic Curves over Q(sqrt(5)), part 2 Atkin Conference Talk
- Elliptic Curves over Q(sqrt(5)), part 1 Atkin Colloquium
- Using Sage for Mathematical Research [sage worksheet] and screencast [youtube], at ICERM, March 20, 2012
- AMath Seminar Talk on Sage, Jan 12, 2012
- The Birch and Swinnerton-Dyer Conjecture, Jan 6, 2012, JMM, 20 minute MAA invited talk
- Solving Cubic Equations, Dec 2011, by Benedict Gross and William Stein
- Combinatorial Potlatch, Nov 2011
- Solving Cubic Equation, Univ of Washington, Nov 2011: pdf and sage worksheet
- October 28, 2011: Elliptic Curves over Q(sqrt(5)), Austin, Texas
- July 13, 2011: Sage: A Community Owned Foundation for Computational Mathematics (plenary talk at FoCM 2011
- May 20, 2011: Shafarevich-Tate Groups of Elliptic Curves of Rank >= 2 (handwritten notes at Univ of Washington)
- May 15, 2011: Shafarevich-Tate Groups of Higher Rank Elliptic Curves (from my talk at the BSD conference)
- May 12, 2011: Another Short Introduction to Sage
- February 26, 2011: MAA Sectional Plenary talk on Sage at an MAA Sectional Meeting
- February 25, 2011: Talk at Stanford on Elliptic Curves over Q(sqrt(5))
- February 11, 2011: Talk at Univ of Washington on Elliptic Curves over Q(sqrt(5))
- February 4, 2011: Talk at MSRI on Elliptic Curves over Q(sqrt(5))
- January 13, 2011: A Short Introduction to Sage
- November 5, 2010: Toward an Analogue of Cremona's Tables over Q(sqrt(5))
- October 2010: Elliptic Curves in Sage talk at ECC
- October 2010: My Next Modular Forms Database
- July 17, 2010: The Development of Symbolic Calculus in Sage, invited talk at Sage Days 24 at RISC in Austria
- July 10, 2010: Euroscipy talk on Sage that I gave at Euroscipy 2010.
- May 11, 2010: Torsion Points on Elliptic Curves over Quartic Fields, in Austin, Texas
- May 10, 2010: TACC Sage talk and tutorial in Austin, Texas
- May 8, 2010: Torsion Points on Elliptic Curves over Quartic Fields, in Vancouver, Canada at SFU
- January 2010: BSD and Sage Talks at the AMS meeting in San Francisco
- August 2009: Sage -- Sun Partner Training Talk
- July 3, 2009: A Gross-Zagier Style Conjecture and BSD
- July 1, 2009: Sage Graphics Tutorial in Barcelona, Spain
- June 24, 2009: Modular Forms with Sage
- June 23, 2009: Elliptic Curves with Sage
- June 22, 2009: Sage Days 16 talk -- Sage: Unifying Mathematical Software
- June 2009: MEGA talk -- Sage: Unifying Mathematical Software
- June 2009: Sage Horizon
- June 2009: Sage and Magma
- April 2009: Pacific Northwest MAA Minicourse and Talk
- Sage Days 14: Introduction to Sage (2009-03-10 at MSRI)
- Sun Virtual User's Group -- 2009-02-12
- Sage ISSAC Plenary Talk -- 2008-07-23
- Modular Abelian Varieties (Amsterdam) -- 2008-07-18
- Sage at Boeing -- 2008-06-12
- Sage -- 2008-04-08 colloquium at University of Puget Sound
- Elliptic curves -- convergence, Sato-Tate, GRH, and BSD
- Computing with the Birch and Swinnerton-Dyer Conjecture
- SAGE modular forms tutorial at Banff 2007-06-05
- Magma modular forms tutorial at Banff 2007-06-04
- SAGE Status Report at SAGE Days 3
- UW Number Theory Seminar on the BSD Conjecture
- SAGE Seminar on Linear Algebra
- Banff talk on the BSD Conjecture
- Two SAGE Seminar Talks -- SAGE 1.0 to 2.0 and Intro
- SAGE talk to Computer Science Department at UW
- SAGE talk to UW Undergraduates
- Waterloo Talks
- SAGE Projects Status Reports
- SAGE -- IMA
- SAGE Days 2: Status Report
- MUSA Lang Memorial Lecture at Berkeley
- CNTA 2006 talks on SAGE
- SAGE Seminar: Alex (SAGE Graphics) and Bob (Packaging SAGE)
- SAGE Seminar: Distributed computation; AJAX; Linear Algebra
- SAGE: How the Interfaces Work
- SAGE at UW: aimed at students
- SAGE: talk at San Francisco AMS meeting (many number theory examples)
- SAGE: Software for Algebra and Geometry Experimentation (click on current.pdf)
- Computing Bernoulli Numbers [PDF] and [MP3] (Feb 16, 2006)
- UW Colloquium (December 5, 2005)
- UCLA Colloquium (December 1, 2005)
- Solving Cubic Equations: An Introduction to the Birch and Swinnerton-Dyer Conjecture (October 6, 2005)
- San Diego Python Users Group talk on SAGE (September 15, 2005)
- San Diego Supercomputing Center talk on the modular forms database project (August 3, 2005)
- Oberwolfach talk on computational verification of the Birch and Swinnerton-Dyer Conjecture (July 22, 2005)
- Bremen Talk on BSD (July 5, 2005)
- Talk on BSD for Math 129 (May 5, 2005)
- PYCONN talk on SAGE in Washington, DC (March 23, 2005)
- Dartmouth Colloquium on the BSD Conjecture and Average Ranks (February 11, 2005)
- Verifying the Birch and Swinnerton-Dyer Conjecture for Specific Elliptic Curves (UCSD, Feb 2, 2005)
- Berkeley Colloquium on the BSD Conjecture and Average Ranks (January 27, 2005)
- Verifying the Birch and Swinnerton-Dyer Conjecture for Specific Elliptic Curves (AMS, January 8, 2005)
- Harvard Talk on Computing p-adic Heights (December 8, 2004)
- A User's Perspective on Pyrex (November Python Meetup in Boston), see also source code.
- Tamagawa Numbers and Visibility (November AMS meeting in Pittsburgh)
- An Introduction to the Birch and Swinnerton-Dyer Conjecture (Nov at UW in Seattle)
- Visibility of Shafarevich-Tate Groups at Higher Level? (Oct at UT Austin, Nov at Stanford)
- MIT Talk on Computing p-adic Height Pairings (October 15, 2004)
- My Paris IHP MAGMA talks (October 2004)
- Modular Degrees of Elliptic Curves and Discriminants of Hecke Algebras (June 18 at ANTS 6) [tex sources]
- Modularity of Shafarevich-Tate Groups (May 22 at Illinois Number Theory Conference)
- Visibility of Shafarevich-Tate Groups at Higher Level (April 16 at UIUC and April 19 at Brown)
- An Introduction to the Birch and Swinnerton-Dyer Conjecture (April 1, 2004 Colloquium at UCONN)
- Solving Cubic Equations: An Introduction to the Birch and Swinnerton-Dyer Conjecture (February 28, 2004, at Brown University)
- Explicitly Computing With Modular Abelian Varieties (Feb 4) in Princeton.
- Explicitly Computing with Modular Abelian Varieties over Qbar (June 18, 2003 in Sydney, AU)
- The Modular Forms Database Project (AIM, March 2003)
- Shafarevich-Tate Groups of Nonsquare Order (Lenstra Treuerfeest, March 2003)
- Talk about Congruent Numbers for High School Students, 2002
- Discriminants of Hecke Algebras (September 2002)
- Constructing Shafarevich-Tate Groups Using Visibility, Paris, 2002. Scroll down for the video of my talk.
- Rochester: Charting the Land of Elliptic Curves (April 2002)
- Harvard: Charting the Land of Elliptic Curves (March 2002)
- Oberwolfach: Explicit Methods in Number Theory (July 2001)
- Some Modular Degree and Congruence Modulus Computations (Oberwolfach, July, 2001)
- The refined Eisenstein conjecture (William Stein, September, 1999)
- New examples of modular icosahedral Artin representations (William Stein, September, 1999)
- Component groups of optimal quotients (William Stein, September, 1999)
- The Manin index of optimal new quotients (William Stein, October, 1999)
- Motifs, Part I (William Stein, November, 1999)
- Motifs, Part II (William Stein, November, 1999)

- Barry Mazur: It's a Story
- Noam Elkies: Heegner-point constructions for curves x^3 + y^3 = k (Princeton BSD, Fall 2003)
- Dick Gross: Local divisibility of Heegner Points (Harvard NTS, Fall 2003)
- Ken Ribet: 1996 course on modular forms and Hecke algebras
- John Tate: Galois Cohomology (John Tate, 1999)
- Smithline, March 22, 2000
- Robin Hartshorne: 1996 course on Algebraic Geometry