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pro vyhledávání: '"Spencer, Joel A"'
Autor:
Spencer, Joel Q.G., Sanderson, David C.W., Rader, Mikaela, Fitzgerald, Scott K., Rex, Charlie L., Sprynskyy, Myroslav, Staff, Richard A.
Publikováno v:
In Quaternary Geochronology June 2024 82
Akademický článek
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Autor:
Bansal, Nikhil, Spencer, Joel H.
We consider an online vector balancing game where vectors $v_t$, chosen uniformly at random in $\{-1,+1\}^n$, arrive over time and a sign $x_t \in \{-1,+1\}$ must be picked immediately upon the arrival of $v_t$. The goal is to minimize the $L^\infty$
Externí odkaz:
http://arxiv.org/abs/1903.06898
Akademický článek
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Publikováno v:
Adv. Appl. Probab. 51 (2019) 1067-1108
We study an urn process with two urns, initialized with a ball each. Balls are added sequentially, the urn being chosen independently with probability proportional to the $\alpha^{th}$ power $(\alpha >1)$ of the existing number of balls. We study the
Externí odkaz:
http://arxiv.org/abs/1805.10653
We address questions of logic and expressibility in the context of random rooted trees. Infiniteness of a rooted tree is not expressible as a first order sentence, but is expressible as an existential monadic second order sentence (EMSO). On the othe
Externí odkaz:
http://arxiv.org/abs/1706.06192
Publikováno v:
Advances in Applied Probability, 2019 Dec 01. 51(4), 1067-1108.
Externí odkaz:
https://www.jstor.org/stable/45277990
Autor:
Podder, Moumanti, Spencer, Joel
We are concerned with exploring the probabilities of first order statements for Galton-Watson trees with $Poisson(c)$ offspring distribution. Fixing a positive integer $k$, we exploit the $k$-move Ehrenfeucht game on rooted trees for this purpose. Le
Externí odkaz:
http://arxiv.org/abs/1512.07371
Autor:
Spencer, Joel, Podder, Moumanti
In the regime of Galton-Watson trees, first order logic statements are roughly equivalent to examining the presence of specific finite subtrees. We consider the space of all trees with Poisson offspring distribution and show that such finite subtrees
Externí odkaz:
http://arxiv.org/abs/1510.08832
Consider "Frozen Random Walk" on $\mathbb{Z}$: $n$ particles start at the origin. At any discrete time, the leftmost and rightmost $\lfloor{\frac{n}{4}}\rfloor$ particles are "frozen" and do not move. The rest of the particles in the "bulk" independe
Externí odkaz:
http://arxiv.org/abs/1503.08534