how are polynomials used in finance

$$, $$ \int_{0}^{T}\nabla p^{\top}a \nabla p(X_{s}){\,\mathrm{d}} s\le C \int_{0}^{T} (1+\|X_{s}\| ^{2n}){\,\mathrm{d}} s $$, $$\begin{aligned} \vec{p}^{\top}{\mathbb {E}}[H(X_{u}) \,|\, {\mathcal {F}}_{t} ] &= {\mathbb {E}}[p(X_{u}) \,|\, {\mathcal {F}}_{t} ] = p(X_{t}) + {\mathbb {E}}\bigg[\int_{t}^{u} {\mathcal {G}}p(X_{s}) {\,\mathrm{d}} s\,\bigg|\,{\mathcal {F}}_{t}\bigg] \\ &={ \vec{p} }^{\top}H(X_{t}) + (G \vec{p} )^{\top}{\mathbb {E}}\bigg[ \int_{t}^{u} H(X_{s}){\,\mathrm{d}} s \,\bigg|\,{\mathcal {F}}_{t} \bigg]. Further, by setting \(x_{i}=0\) for \(i\in J\setminus\{j\}\) and making \(x_{j}>0\) sufficiently small, we see that \(\phi_{j}+\psi_{(j)}^{\top}x_{I}\ge0\) is required for all \(x_{I}\in [0,1]^{m}\), which forces \(\phi_{j}\ge(\psi_{(j)}^{-})^{\top}{\mathbf{1}}\). The occupation density formula implies that, for all \(t\ge0\); so we may define a positive local martingale by, Let \(\tau\) be a strictly positive stopping time such that the stopped process \(R^{\tau}\) is a uniformly integrable martingale. Polynomials in one variable are algebraic expressions that consist of terms in the form axn a x n where n n is a non-negative ( i.e. \(V\), denoted by \({\mathcal {I}}(V)\), is the set of all polynomials that vanish on \(V\). $$, \(t\mapsto{\mathbb {E}}[f(X_{t\wedge \tau_{m}})\,|\,{\mathcal {F}}_{0}]\), \(\int_{0}^{t\wedge\tau_{m}}\nabla f(X_{s})^{\top}\sigma(X_{s}){\,\mathrm{d}} W_{s}\), $$\begin{aligned} {\mathbb {E}}[f(X_{t\wedge\tau_{m}})\,|\,{\mathcal {F}}_{0}] &= f(X_{0}) + {\mathbb {E}}\left[\int_{0}^{t\wedge\tau_{m}}{\mathcal {G}}f(X_{s}) {\,\mathrm{d}} s\,\bigg|\, {\mathcal {F}}_{0} \right] \\ &\le f(X_{0}) + C {\mathbb {E}}\left[\int_{0}^{t\wedge\tau_{m}} f(X_{s}) {\,\mathrm{d}} s\,\bigg|\, {\mathcal {F}}_{0} \right] \\ &\le f(X_{0}) + C\int_{0}^{t}{\mathbb {E}}[ f(X_{s\wedge\tau_{m}})\,|\, {\mathcal {F}}_{0} ] {\,\mathrm{d}} s. \end{aligned}$$, \({\mathbb {E}}[f(X_{t\wedge\tau_{m}})\, |\,{\mathcal {F}} _{0}]\le f(X_{0}) \mathrm{e}^{Ct}\), $$ p(X_{u}) = p(X_{t}) + \int_{t}^{u} {\mathcal {G}}p(X_{s}) {\,\mathrm{d}} s + \int_{t}^{u} \nabla p(X_{s})^{\top}\sigma(X_{s}){\,\mathrm{d}} W_{s}. In the health field, polynomials are used by those who diagnose and treat conditions. , essentially different from geometric Brownian motion, such that all joint moments of all finite-dimensional marginal distributions.

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