dorsal/arxiv
View SchemaStochastic Calculus for Rough Fractional Brownian Motion via Operator Factorization
| Authors | Ramiro Fontes |
|---|---|
| Categories | |
| ArXiv ID | 2601.09967vv2 |
| URL | https://arxiv.org/abs/2601.09967 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
We develop an operator-theoretic framework for stochastic calculus with respect to rough fractional Brownian motion with Hurst parameter H < 1/2. Building on a covariant derivative defined via kernel factorization, we construct a closed unbounded operator on L2(Omega) adapted to the non-semimartingale setting. This approach yields explicit derivative representations for square-integrable functionals and provides a unified analytical framework compatible with rough path techniques. The results extend classical stochastic calculus beyond the semimartingale regime.
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"abstract": "We develop an operator-theoretic framework for stochastic calculus with respect to rough fractional Brownian motion with Hurst parameter H \u003c 1/2. Building on a covariant derivative defined via kernel factorization, we construct a closed unbounded operator on L2(Omega) adapted to the non-semimartingale setting. This approach yields explicit derivative representations for square-integrable functionals and provides a unified analytical framework compatible with rough path techniques. The results extend classical stochastic calculus beyond the semimartingale regime.",
"arxiv_id": "2601.09967",
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"Ramiro Fontes"
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"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "Stochastic Calculus for Rough Fractional Brownian Motion via Operator Factorization",
"url": "https://arxiv.org/abs/2601.09967",
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