3,062 research outputs found
Heegaard diagrams and surgery descriptions for twisted face-pairing 3-manifolds
The twisted face-pairing construction of our earlier papers gives an
efficient way of generating, mechanically and with little effort, myriads of
relatively simple face-pairing descriptions of interesting closed 3-manifolds.
The corresponding description in terms of surgery, or Dehn-filling, reveals the
twist construction as a carefully organized surgery on a link.
In this paper, we work out the relationship between the twisted face-pairing
description of closed 3-manifolds and the more common descriptions by surgery
and Heegaard diagrams. We show that all Heegaard diagrams have a natural
decomposition into subdiagrams called Heegaard cylinders, each of which has a
natural shape given by the ratio of two positive integers. We characterize the
Heegaard diagrams arising naturally from a twisted face-pairing description as
those whose Heegaard cylinders all have integral shape. This characterization
allows us to use the Kirby calculus and standard tools of Heegaard theory to
attack the problem of finding which closed, orientable 3-manifolds have a
twisted face-pairing description.Comment: Published by Algebraic and Geometric Topology at
http://www.maths.warwick.ac.uk/agt/AGTVol3/agt-3-10.abs.htm
America\u27s road to socialism
https://stars.library.ucf.edu/prism/1749/thumbnail.jp
The coming American revolution
https://stars.library.ucf.edu/prism/1010/thumbnail.jp
The Debs centennial
https://stars.library.ucf.edu/prism/1741/thumbnail.jp
The road to peace according to Stalin and according to Lenin
https://stars.library.ucf.edu/prism/1297/thumbnail.jp
James M. Cannon to Senator James O. Eastland, 8 July 1976
Typed letter signed dated 8 July 1976 from James M. Cannon, Assistant to the President for Domestic Affairs, to Eastland, re: Section 404 of the Federal Water Pollution Control Act. Attached: copy White House press release dated 2 July 1976, re: above topic.https://egrove.olemiss.edu/joecorr_g/1077/thumbnail.jp
The Voice of socialism: Radio speeches by the Socialist Workers Party candidates in the 1948 election
https://stars.library.ucf.edu/prism/1084/thumbnail.jp
The end of the Comintern
https://stars.library.ucf.edu/prism/1822/thumbnail.jp
Doctor of Philosophy
dissertationChapter 1 examines the relevance of operations based variables predicting future earnings. We use United States Air Transportation (airline) industry data to identify operations based variables that provide predictive information beyond that found in earnings components. We show that the adjusted R-squared from accounting based prediction models can be increased up to 5.1 percentage points by including operations based variables. We also find that predictive information found in operations based variables is not fully impounded in financial analysts' earnings predictions. We show that operations based variables explain 7.7 percentage points of analyst forecast error. We observe that this effect is especially large after the terroristic attacks of September 11, 2001 suggesting analysts continued using historical prediction methods, even though the airline industry went through dramatic turmoil. Chapter 2 examines determinants of sticky cost behavior (asymmetric cost changes as revenue fluctuates). Cost accounting researchers examine sticky cost behavior to gain insights about management capacity decisions. The majority of the extant literature infers that costs decrease slower than they increase with demand fluctuations because management retains unused capacity in anticipation of future demand resurgence. I use airline industry data to provide evidence that sticky costs are associated with capacity and output selling price changes as management matches capacity with sales volume. I conclude that sticky costs arise when management adjusts capacity and sales volume (through pricing) if marginal cost of adding capacity is increasing as demand grows and marginal benefit from reducing capacity is decreasing as demand falls. There is a lack of research investigating sources of credibility in nonfinancial disclosures. This is likely due to difficulty in associating expected future performance with nonfinancial variables. Chapter 3 addresses the problem using customer retention strategy disclosures. Customer retention theory provides expectations regarding economic outcome which can be used to validate sources of credibility in nonfinancial disclosure. I find that firms that provide verifiable detail in their customer retention disclosure increase the persistence of positive abnormal performance relative to firms that do not. This result contributes by providing evidence that verifiable detail is a valid source of credibility in nonfinancial disclosure
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