What Color is Your Paratext?

what is your diagnosis?

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what is your diagnosis?

What Color Is Your Jacobian? Graph Coloring for Computing Derivatives

Graph coloring has been employed since the 1980s to efficiently compute sparse Jacobian and Hessian matrices using either finite differences or automatic differentiation. Several coloring problems occur in this context, depending on whether the matrix is a Jacobian or a Hessian, and on the specifics of the computational techniques employed. We consider eight variant vertex coloring problems her...

a case of unilateral proptosis: what is your diagnosis?

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A middle-aged lady with an asymptomatic, hyperpigmented plaque on the thigh: what is your diagnosis?

CLINICAL PRESENTATIONA 44-year-old lady came to a dermatology clinic due to an asymptomatic, hyperpigmented plaque on her right thigh since 4 months ago. On physical exam, hypertrichosis on the lesion was notable (Figure 1). Rubbing the lesion resulted in erythema and edema of the lesion. She had no systemic disease and her family history was unremarkable.