Linking Number: Gauss' linking number of closed curves and algebraic topology.

Winding Number: Understanding the Algebraic Topology underlying the winding number of a closed curve in the plane.

Hyperbolic Springs: Deriving the ODE for a spring which is pushed in hyperbolic geometry (it oscillates!)

Convolution and Differentiation of Distributions: If F is a distribution and g is a function, why is (DF)*g equal to F*Dg?

Topologizing The Space Of Distributions: Why do we need to require convergence of the derivatives when defining a topology on the set of distributions?

Deep Time: Some thoughts on the importance of appreciating the immensity of earth's history.

Life in Hyperbolic Space: The dangers of life in a negatively curved space

Cassini: Saying goodbye to my favorite space craft, on the eve of its entry into Saturn's atmosphere.

Cubics and Braids: The bridge between the 3-strand braid group and the trefoil knot complement

Hopf: An old note, from my early graduate school days, explaining the hopf fibration.

Lattices: Lattices in the Plane and the Trefoil Knot

Convolution: A note I wrote to myself in undergraduate, when trying to understand the definition of convolution.

Geometric_series: A note from early college explaining the summation of infinite series.

Divergence: Notes to myself from early college about what divergence means.

The Quadratic Formula: A derivation of the quadratic formula interpreting monomial expressions as lengths and areas.