Zobrazeno 1 - 10
of 1 296
pro vyhledávání: '"Pérez, Marco A."'
Autor:
Grunspan, Cyril, Perez-Marco, Ricardo
We present three very simple variants of the classic Heads or Tails game using chips, each of which contributes to our understanding of the Bitcoin protocol. The first variant addresses the issue of temporary Bitcoin forks, which occur when two miner
Externí odkaz:
http://arxiv.org/abs/2405.04168
Autor:
Muñoz, Vicente, Perez-Marco, Ricardo
Publikováno v:
Communications in Number Theory and Physics, Volume 18, Number 3, 485-507, 2024
Ramanujan studied a general class of Stirling constants that are the resummation of some natural divergent series. These constants include the classical Euler-Mascheroni, Stirling and Glaisher-Kinkelin constants. We find natural integral representati
Externí odkaz:
http://arxiv.org/abs/2402.02660
Autor:
Grunspan, Cyril, Perez-Marco, Ricardo
E-cash was invented in 1982 by David Chaum as an anonymous cryptographic electronic cash system based on blind signatures. It is not a decentralized form of money as Bitcoin. It requires trust on the server or Mint issuing the e-cash tokens and valid
Externí odkaz:
http://arxiv.org/abs/2306.12783
Autor:
Lado-Roigé, Ricard, Pérez, Marco A.
Publikováno v:
Knowl.-Based Syst. 269 (2023) 110493
The goal of video motion magnification techniques is to magnify small motions in a video to reveal previously invisible or unseen movement. Its uses extend from bio-medical applications and deepfake detection to structural modal analysis and predicti
Externí odkaz:
http://arxiv.org/abs/2302.10001
Autor:
Grunspan, Cyril, Perez-Marco, Ricardo
We present the new mining protocol Proof-of-Reputation (PoR) for decentralized Proof-of-Work (PoW) blockchains, in particular for Bitcoin. PoR combines the classical PoW with the new ingredient of cryptographic reputation. The same level of security
Externí odkaz:
http://arxiv.org/abs/2302.06966
Autor:
Perez-Marco, Ricardo
We introduce Omega functions that generalize Euler Gamma functions and study the functional difference equation they satisfy. Under a natural exponential growth condition, the vector space of meromorphic solutions of the functional equation is finite
Externí odkaz:
http://arxiv.org/abs/2301.04759
Autor:
Grunspan, Cyril, Perez-Marco, Ricardo
We propose Ping-Pong Swaps: A secure pure peer-to-peer crosschain swap mechanism of tokens or cryptocurrencies that does not require escrow nor an intermediate trusted third party. The only technical requirement is to be able to open unidirectional p
Externí odkaz:
http://arxiv.org/abs/2211.13335
Autor:
Grunspan, Cyril, Perez-Marco, Ricardo
It has been known for some time that the Nakamoto consensus as implemented in the Bitcoin protocol is not totally aligned with the individual interests of the participants. More precisely, it has been shown that block withholding mining strategies ca
Externí odkaz:
http://arxiv.org/abs/2211.07270
Autor:
Becerril, Víctor, Pérez, Marco A.
We study homological and homotopical aspects of Gorenstein flat modules over a ring with respect to a duality pair $(\mathcal{L,A})$. These modules are defined as cycles of exact chain complexes with components in $\mathcal{L}$ which remain exact aft
Externí odkaz:
http://arxiv.org/abs/2210.11014