EINSTEIN, Albert (1879-1955). Autograph manuscript, a series of six groups of calculations, n.p., n.d. [?1930s], in blue and black ink, half page, 4to (278 x 202mm) , on paper with watermark 'Whiting's mutual bond rag content', (frayed and yellowed at folds and margins). Unexplained mathematical calculations: according to the editors of the Einstein papers, the first group constitutes the expression for the second derivative of a function according to its spatial variables, x, y, z ; the second is the development of a Taylor series of the same function according to its time variable, t . The subsequent expressions are steps in calculating the variable of the square of the first derivative of this function, making use of partial integration. The calculations are described by the editors of the Einstein papers as 'routine mathematical methods introduced in introductory courses of calculus. For this reason, it is hopeless to nail down the concrete problem that is under discussion or the time frame involved', although the apparently American paper stock may suggest a date later in Einstein's life.
EINSTEIN, Albert (1879-1955). Autograph manuscript, a series of six groups of calculations, n.p., n.d. [?1930s], in blue and black ink, half page, 4to (278 x 202mm) , on paper with watermark 'Whiting's mutual bond rag content', (frayed and yellowed at folds and margins). Unexplained mathematical calculations: according to the editors of the Einstein papers, the first group constitutes the expression for the second derivative of a function according to its spatial variables, x, y, z ; the second is the development of a Taylor series of the same function according to its time variable, t . The subsequent expressions are steps in calculating the variable of the square of the first derivative of this function, making use of partial integration. The calculations are described by the editors of the Einstein papers as 'routine mathematical methods introduced in introductory courses of calculus. For this reason, it is hopeless to nail down the concrete problem that is under discussion or the time frame involved', although the apparently American paper stock may suggest a date later in Einstein's life.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
