I started the following articles: Shape optimization, Infinite-dimensional optimization, Newton's method in optimization, Integrating factor, Classification of discontinuities, Padé approximant, Kernel density estimation, Complex measure, Atom (measure theory), Semi-differentiability, Local boundedness, Holomorphic functional calculus, Discontinuous linear map, Subderivative, Weak solution, Explicit and implicit methods, Signed distance function, Antiderivative (complex analysis), Discrete measure, Viète's formulas, Star domain, Vector measure, Amoeba (mathematics), Spherical mean, Monodromy theorem, Mittag-Leffler star, Convex metric space, Céa's lemma, Trace operator, Vibrations of a circular drum, Artificial skin, Artificial bone, Kiva Systems, Willow Garage, Atlas statue (New York City), Christmas in the Park (San Jose), NASA Ames Exploration Center.
Some of these articles are still largely my work, while others were later edited (and in a few cases substantially expanded) by other editors.
I also heavily modified the articles Level set method, Gradient descent, Surface integral, Analytic function, Midpoint method, Jordan measure, Heronian triangle, Phase-shift mask.