Iterative solution of a discrete axially symmetric potential problem

The Dirichlet problem for the axially symmetric potential equation in a cylindrical domain is discretized by means of a five-point difference approximation. The resulting difference equation is solved by point or line iterative methods. The rate of convergence of these methods is determined by the spectral radius of the underlying point or line Jacobi matrix. An asymptotic approximation for this spectral radius, valid for small mesh size, is derived

Death in Life at Christmas: T. S. Eliot\u27s Journey of the Magi

One of T.S. Eliot\u27s most recognized poems is Journey of the Magi. 1 The poem first appeared inside a Christmas card. Richard de la Mare, who served with Eliot as director for the publishing house Faber & Faber, had the entrepreneurial idea of sending Christmas cards to those who had business with the press. In the spirit of Shakespeare, the series was called Ariel Poems. The inside page of the card contained an unpublished Christmas-related poem from a contemporary poet, and the exterior was accompanied by an illustration from a noted contemporary artist. Between 1927 and 1931 the press released thirty-eight Ariel Poems by figures such as Thomas Hardy, G. K. Chesterton, Siegfried Sassoon, W. B. Yeats, and D. H. Lawrence. T. S. Eliot wrote five of the poems during these years, of which four were matched with illustrations by the avant-garde American poster artist, Edward McKnight Kauffer. A 1936 collection of Eliot\u27s poetry for Faber & Faber included his contributions to the cards under the heading Ariel Poems