ar X iv : c s / 06 03 01 6 v 1 [ cs . S E ] 3 M ar 2 00 6 Object - Oriented Frameworks as Basis for Modularity in Program - Language Design

ar X iv : c s / 01 10 03 8 v 1 [ cs . C C ] 1 8 O ct 2 00 1 Counting Is Easy †

For any fixed k, a remarkably simple single-tape Turing machine can simulate k independent counters in real time.

ar X iv : h ep - t h / 06 03 12 5 v 1 1 5 M ar 2 00 6 hep - th / 0603125 ITP – UH – 05 / 06 Noncommutative Instantons on C

We construct explicit solutions of the Hermitian Yang-Mills equations on the noncommutative space C θ . In the commutative limit they coincide with the standard instantons on CP written in local coordinates.

ar X iv : c s / 06 09 03 2 v 1 [ cs . D S ] 7 S ep 2 00 6 CR - precis : A deterministic summary structure for update data streams

We present the CR-precis structure, that is a general-purpose, deterministic and sub-linear data structure for summarizing update data streams. The CR-precis structure yields the first deterministic sub-linear space/time algorithms for update streams for answering a variety of fundamental stream queries, such as, (a) point queries, (b) range queries, (c) finding approximate frequent items, (d) ...

ar X iv : h ep - e x / 06 03 01 5 v 1 8 M ar 2 00 6 Measurement of the Υ Production Cross Section in 920 GeV Fixed - Target Proton - Nucleus Collisions

The proton-nucleon cross section ratio R = Br(Υ → l+l−) · dσ(Υ)/dy|y=0 /σ(J/ψ) has been measured with the HERA-B spectrometer in fixed-target proton-nucleus collisions at 920 GeV proton beam energy corresponding to a proton-nucleon cms energy of √ s = 41.6 GeV. The combined results for the decay channels Υ → e+e− and Υ → μ+μ− yield a ratio R = (9.0±2.1) ·10−6 . The corresponding Υ production cr...

ar X iv : a st ro - p h / 01 03 25 4 v 1 1 6 M ar 2 00 1 Construction of the Variability → Luminosity Estimator