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Spreads which are Not Dual Spreads
Canadian Mathematical Bulletin, 1969In this note we show the existence of a spread which is not a dual spread, thus answering a question in [1]. We also obtain some related results on spreads and partial spreads.Let ∑ = PG(2t-l, F) be a projective space of odd dimension (2t-l, ≥2) over the field F. In accordance with [1] we make the following definitions.
Bruen, A., Fisher, J. C.
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Geometriae Dedicata, 1999
A \((t - 1)\)-spread in \(\Sigma = PG(n - 1, q)\) is a family \({\mathcal S}\) of mutually disjoint subspaces of dimension \(t - 1\) which partition the points of \(\Sigma\). A necessary and sufficient condition for the existence of a spread is \(t |n\), and so we assume \(n = rt\) for some integer \(r\) from now on. There is a natural \(2 - (q^{rt}, q^
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A \((t - 1)\)-spread in \(\Sigma = PG(n - 1, q)\) is a family \({\mathcal S}\) of mutually disjoint subspaces of dimension \(t - 1\) which partition the points of \(\Sigma\). A necessary and sufficient condition for the existence of a spread is \(t |n\), and so we assume \(n = rt\) for some integer \(r\) from now on. There is a natural \(2 - (q^{rt}, q^
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Archives of Insect Biochemistry and Physiology, 1999
In most Lepidoptera, plasmatocytes and granulocytes are the two hemocyte classes capable of adhering to foreign targets. Previously, we identified plasmatocyte spreading peptide (PSP1) from the moth Pseudoplusia includens and reported that it induced plasmatocytes to rapidly spread on foreign surfaces.
M R, Strand, K D, Clark
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In most Lepidoptera, plasmatocytes and granulocytes are the two hemocyte classes capable of adhering to foreign targets. Previously, we identified plasmatocyte spreading peptide (PSP1) from the moth Pseudoplusia includens and reported that it induced plasmatocytes to rapidly spread on foreign surfaces.
M R, Strand, K D, Clark
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SPREAD UNIFORMITIES AND UNIFORM SPREADS
Quaestiones Mathematicae, 2001We discuss a point free analog of the topological fact that every uniformly continuous function on a dense subspace of a uniform space into a complete uniform space has a unique continuous extension. It is shown that a uniform frame homomorphism h : L → M from a complete uniform frame L into a uniform frame M (not necessarily ...
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2013
The main conceptual and terminological issues related to lateral spreading as an extension of a cohesive and fractured rock or soil mass over a softer underlying material are presented and accompanied by a brief outline of the state-of-the-art on the topic. Then the geomorphic features related to the two main types of spreading (rock spreading and soil
Pasuto A., SOLDATI, Mauro
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The main conceptual and terminological issues related to lateral spreading as an extension of a cohesive and fractured rock or soil mass over a softer underlying material are presented and accompanied by a brief outline of the state-of-the-art on the topic. Then the geomorphic features related to the two main types of spreading (rock spreading and soil
Pasuto A., SOLDATI, Mauro
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2019
Abstract This chapter deals with how parthenium weed (Parthenium hysterophorus), with a humble origin in the neotropics, has ended up as a global weed with a pantropical distribution spreading across about 48 countries in the last five to six decades.
Asad Shabbir +2 more
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Abstract This chapter deals with how parthenium weed (Parthenium hysterophorus), with a humble origin in the neotropics, has ended up as a global weed with a pantropical distribution spreading across about 48 countries in the last five to six decades.
Asad Shabbir +2 more
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Productivity spreads, market power spreads and trade [PDF]
, 2010 Much of recent Trade theory focuses on heterogeneity of firms and the differential impacttrade policy might have on firms with different levels of productivity. A common problem isthat most firm level dataset do not contain information on output prices of firms which makesit difficult to distinguish between productivity differences and differences in ...
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Spread Uniformities and Uniform Spreads
Quaestiones Mathematicae, 2004We discuss a point free analog of the topological fact that every uniformly continuous function on a dense subspace of a uniform space into a complete uniform space has a unique continuous extension. It is shown that a uniform frame homomorphism h: L → M from a complete uniform frame L into a uniform frame M (not necessarily complete ...
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