163,995 research outputs found
Coefficients in powers of the log series
We determine the p-exponent in many of the coefficients in the power series
(log(1+x)/x)^t, where t is any integer. In our proof, we introduce a variant of
multinomial coefficients. We also characterize the power series x/log(1+x) by
certain zero coefficients in its powers.Comment: 8 page
Geomorphology of Mountainous Deserts
The peculiar land forms of the desert are due largely (1) to the paucity of plant growth, in consequence of which (2) disintegrated rock, produced more by physical than by chemical processes, which (3) vary with rock nature (hence granitic rocks assume forms of special interest), does not remain near its source long enough in the earlier stages of erosion to be reduced to very fine texture before (4) it is carried by stream floods or sheet floods toward or to (5) playa basins of rising base-level; but in an advanced stage of the arid cycle (6) the playa surface may be lowered by the wind, whereupon the rock slopes previously weathered down to sheet-flood grade and buried with sheet-flood waste will be (7) trenched by stream floods with respect to the sinking baselevel, and the buried rock floors will be laid bare until again reduced to sheet-flood grade. But (8) in deserts draining to the ocean these various processes will work with respect to a relatively fixed baselevel; also (9) in deserts where the action of water floods is dominated by wind action, the carving of the surface will be in part independent of any baselevel
SNEEP: Social Networking Extensions for EPrints (SNEEPflet)
Leaflet created to promote SNEEP plugins at poster/demo session at JISC Innovations Forum, Keele University, 2008
3-primary v1-periodic homotopy groups of E7
We compute the 3-primary v1-periodic homotopy groups of the exceptional Lie
group E7. Now E8 at the primes 3 and 5 is the only compact simple Lie group
whose odd-primary v1-periodic homotopy groups remian to be computed. The main
work is computing the unstable Novikov spectral sequence of \Omega E7/Sp(2).
Showing that this converges to v1-periodic homotopy groups requires recent work
of Bousfield and Bendersky-Thompson.Comment: 51 pages. Submitted to New York Electronic Journal of Mathematic
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