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19,841
Semantics of ContextFree Languages
 In Mathematical Systems Theory
, 1968
"... "Meaning " may be assigned to a string in a contextfree language by defining "attributes " of the symbols in a derivation tree for that string. The attributes can be defined by functions associated with each production in the grammar. This paper examines the implications of th ..."
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Cited by 569 (0 self)
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"Meaning " may be assigned to a string in a contextfree language by defining "attributes " of the symbols in a derivation tree for that string. The attributes can be defined by functions associated with each production in the grammar. This paper examines the implications
Experimental Estimates of Education Production Functions
 Princeton University, Industrial Relations Section Working Paper No. 379
, 1997
"... This paper analyzes data on 11,600 students and their teachers who were randomly assigned to different size classes from kindergarten through third grade. Statistical methods are used to adjust for nonrandom attrition and transitions between classes. The main conclusions are (1) on average, performa ..."
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Cited by 529 (19 self)
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effect; (4) class size has a larger effect for minority students and those on free lunch; (5) Hawthorne effects were unlikely. I.
SeibergWitten prepotential from instanton counting
, 2002
"... In my lecture I consider integrals over moduli spaces of supersymmetric gauge field configurations (instantons, Higgs bundles, torsion free sheaves). The applications are twofold: physical and mathematical; they involve supersymmetric quantum mechanics of Dparticles in various dimensions, direct co ..."
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Cited by 496 (9 self)
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In my lecture I consider integrals over moduli spaces of supersymmetric gauge field configurations (instantons, Higgs bundles, torsion free sheaves). The applications are twofold: physical and mathematical; they involve supersymmetric quantum mechanics of Dparticles in various dimensions, direct
Faithfulness of free product states
 J. Funct. Anal
, 1998
"... Abstract. It is proved that the free product state, in the reduced free product of C ∗ –algebras, is faithful if the states one started with are faithful. The reduced free product of C ∗ –algebras was introduced by Voiculescu as the appropriate construction for C ∗ –algebras in the setting of his th ..."
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Cited by 11 (5 self)
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Abstract. It is proved that the free product state, in the reduced free product of C ∗ –algebras, is faithful if the states one started with are faithful. The reduced free product of C ∗ –algebras was introduced by Voiculescu as the appropriate construction for C ∗ –algebras in the setting of his
FREE PRODUCT FACTORIZATION
"... Abstract. In this paper proves a result about free products of groups, namely, that if a group is finitely generated, it can be factored uniquely into the free product of “indecomposable ” groups. This proof uses the theory of fundamental groups and covering spaces, so some basics of algebraic topo ..."
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Abstract. In this paper proves a result about free products of groups, namely, that if a group is finitely generated, it can be factored uniquely into the free product of “indecomposable ” groups. This proof uses the theory of fundamental groups and covering spaces, so some basics of algebraic
The free product of matroids
 EUROPEAN J. COMBIN
, 2005
"... We introduce a noncommutative binary operation on matroids, called free product. We show that this operation respects matroid duality, and has the property that, given only the cardinalities, an ordered pair of matroids may be recovered, up to isomorphism, from its free product. We use these results ..."
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Cited by 8 (2 self)
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We introduce a noncommutative binary operation on matroids, called free product. We show that this operation respects matroid duality, and has the property that, given only the cardinalities, an ordered pair of matroids may be recovered, up to isomorphism, from its free product. We use
DECOMPOSITIONS OF THE FREE PRODUCT OF GRAPHS
, 2007
"... We study the free product of rooted graphs and its various decompositions using quantum probabilistic methods. We show that the free product of rooted graphs is canonically associated with free independence, which completes the proof of the conjecture that there exists a product of rooted graphs can ..."
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Cited by 2 (0 self)
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We study the free product of rooted graphs and its various decompositions using quantum probabilistic methods. We show that the free product of rooted graphs is canonically associated with free independence, which completes the proof of the conjecture that there exists a product of rooted graphs
The stable rank of some free product
 C ∗ –algebras, Duke Math. J
, 1997
"... Abstract. A necessary and sufficient condition for the simplicity of the C ∗ – algebra reduced free product of finite dimensional abelian algebras is found, and it is proved that the stable rank of every such free product is 1. Related results about other reduced free products of C ∗ –algebras are p ..."
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Cited by 22 (9 self)
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Abstract. A necessary and sufficient condition for the simplicity of the C ∗ – algebra reduced free product of finite dimensional abelian algebras is found, and it is proved that the stable rank of every such free product is 1. Related results about other reduced free products of C ∗ –algebras
On Dehn Functions of Free Products of Groups
, 1999
"... In this article we show that the Dehn function of a nontrivial free product of groups is equivalent to its subnegative closure. ..."
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Cited by 13 (1 self)
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In this article we show that the Dehn function of a nontrivial free product of groups is equivalent to its subnegative closure.
Automatic continuity for homomorphisms into free products
 J. Symbolic Logic
"... ABSTRACT. A homomorphism from a completely metrizable topological group into a free product of groups whose image is not contained in a factor of the free product is shown to be continuous with respect to the discrete topology on the range. In particular, any completely metrizable group topology on ..."
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Cited by 1 (0 self)
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ABSTRACT. A homomorphism from a completely metrizable topological group into a free product of groups whose image is not contained in a factor of the free product is shown to be continuous with respect to the discrete topology on the range. In particular, any completely metrizable group topology
Results 1  10
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19,841