JZdynamics

Let $\{ f_t(x) := e^{\frac{t}{\log x}} \}_{t \in [1/2,2]}$ be a smooth family of functions on $(0,1)$, and let $F_t(s)$ denote their Mellin transforms: $$F_t(s) := \int_0^1 f_t(x) \, x^{s-1} \, dx = 2 \sqrt{\frac{t}{s}} \, K_1(2\sqrt{ts}),$$ where $K_1$ is the modified Bessel function of the second kind. Define the Hermitian metric $$g_t(s) := |F_t(s)|^2 \, ds \otimes d\bar{s}$$ on the punctured complex plane $\mathbb{C}^\times$. Let $S$ be the topological quotient obtained by identifying the boundary curves $f_{1/2}(x)$ and $f_2(x')$ along lines of slope $+1$ in the $(x,f)$-plane. Then: The space $S$ is homeomorphic to the $2$-sphere with two conical singularities, arising from the boundary identifications. The metric $g_t(s)$ induces a globally defined Hermitian metric $g^{\sim}(s)$ on $S$, with conical singularities at $s = 0$ and $s = \infty$. Near $s = 0$, the metric behaves as     $$g_t(s) \sim \frac{1}{|s|^2} ds \otimes d\bar{s},$$     which corresponds to the...

To begin formally laying the groundwork for $\zeta$-space we must revisit the spectral tower. To each $\mathcal F$-completion in dimension $n$, we can take a symmetrical subset $\mathcal I^{(n-1)}$ and enrich these objects with bundles restricted to skeletons. In dimension $n=3$ we have $\mathcal I^{(3-1)}$ and we take line bundles restricted to $\Gamma$ from which we then can associate an Ihara zeta function to $\Gamma$, which may be twisted.  Then we will define $\zeta$-space, or $\zeta^n$ as the space where we associate copies of $\mathcal I^{(n-1)}$ to an integer lattice, $\Bbb Z^n \subset \Bbb R^n$. A lot of work must be done from here but the benefits of this work will be very useful theoretically as well as for applications. Essentially we introduce the spectral tower to classify all the elements which will then be assigned to lattice sites.  Let $\zeta^n$ denote the zeta-structured lattice space: $$\zeta^n := \left\{ z \mapsto \left( \mathcal{I}^{(n-1)}_z,\ \mathcal{L}...

Sheaf Stack over the Dimensional Stratification Site We define a stratified site $\mathcal{S}$ indexed by dimension $n \in \mathbb{Z}_{\geq 2}$, whose objects are geometric-combinatorial models $\mathcal{I}^{(n)}$ associated to dimension-$n$ F-completions. Morphisms in this site correspond to boundary inclusions, coordinate projections, and degenerations between dimensions: $$\mathcal{I}^{(n)} \to \mathcal{I}^{(n-1)} \quad \text{via coordinate slice or foliation boundary}.$$ Let $\mathcal{M}_\Delta^{(n)}$ denote the moduli space of $\Delta$-twisted holonomy representations in dimension $n$, with $\mathcal{M}_\Delta^{(2)} = \mathrm{U}(1)^r / \Delta$ the classical representation torus quotient. We define a sheaf stack of zeta data over $\mathcal{S}$: $$\mathscr{Z} : \mathcal{S}^{\mathrm{op}} \longrightarrow \mathbf{Stacks}$$ such that: For each $n$, $\mathscr{Z}(\mathcal{I}^{(n)})$ is a stack (e.g. derived or topological) encoding the family of zeta sheaves over $\mathcal{M}_\Delta^{(n)}...

 Let $\Gamma$ be a finite connected graph (or multigraph) with first Betti number $r = \beta_1(\Gamma)$, and let $\Delta \subset \mathrm{Aut}(\Gamma)$ be a finite subgroup of automorphisms acting on $\pi_1(\Gamma)$ via pullback. Let $\mathcal{M}_\Delta := \mathrm{U}(1)^r / \Delta$ denote the moduli space of flat unitary representations of $\pi_1(\Gamma)$ up to $\Delta$-symmetry — equivalently, the moduli space of holonomy classes for $\mathrm{U}(1)$-bundles twisted by $\Delta$. Suppose further that there exists a stratified geometric object $\mathcal{I} \subseteq [-1,1]^3$, constructed from $\Gamma$ and $\Delta$, encoding topological, singular, or foliation-theoretic data derived from $\Gamma$ and its symmetries. For example, $\mathcal{I}$ may arise as a cone-singular surface with corners or as a compactification of a flow space determined by $\Gamma$. Spectral Moduli Duality Conjecture: There exists a natural equivalence of orbifolds (or derived stacks) $$\mathcal{M}_\Delta \cong...

Let $\Gamma$ be a finite connected graph (e.g., the 1-skeleton of a stratified space or foliated complex), and let $\mathcal{R}$ denote the stratified space of holonomy representations: $$\mathcal{R} = \bigsqcup_{G \subseteq GL_n(\mathbb{C})} \mathcal{R}_G,\quad \mathcal{R}_G := \left\{ \rho : \pi_1(\Gamma) \to G \right\}.$$ Each stratum $\mathcal{R}_G$ corresponds to a distinct choice of structure group $G$, such as $U(1)$, $SU(2)$, or   $GL_n(\mathbb{C})$. Define a stratified holonomy evolution governed by a sequence of generalized symmetry transformations $$\Psi_k : \mathcal{R}_{G_k} \longrightarrow \mathcal{R}_{G_{k+1}},$$ which may be continuous or discrete, invertible or not, and may preserve or enhance the structure group. The evolution of representations is given by the discrete recurrence: $$\rho_{k+1} = \Psi_k(\rho_k), \qquad \rho_k \in \mathcal{R}_{G_k},\; \rho_{k+1} \in \mathcal{R}_{G_{k+1}}.$$ This defines a dynamical system over the stratified moduli space $\mathcal{R...

 Consider a triple: $$(\mathcal I, z, \Sigma)$$ where $\mathcal I$ is the canonical stratified surface defined in previous posts (smooth away from a singular set) embedded in $[-1,1]^3$, $z$ is the vertical projection (interpreted as time), and $\Gamma=\Sigma_0$ is the critical level set. Define a movie that is given by: $$\Sigma_z :=\begin{cases}\{v_1, v_2, v_3, v_4\} & \text{if } z = \pm 1, \\\\\coprod_{i=1}^4 S^1_i & \text{if } z \in (-1, 0) \cup (0, 1), \\\\\Gamma & \text{if } z = 0,\end{cases}$$ where each $S^1_i$ denotes a topological circle, and $\Gamma$ is a finite connected 4-regular multi-graph formed by the merging of four disjoint circles into two overlapping ovals, with their four intersection points defining the graphs vertices.  For each $z \in (-1,0) \cup (0,1)$, the level set $\Sigma_z$ consists of four disjoint circles $S^1_1, \ldots, S^1_4$. Along each $S^1_i$, we define a real line field: $$V_i \subset T\mathbb{R}^3|_{S^1_i},$$ consisting of un...

We will construct a highly symmetric leaf (an interface leaf) as a special subset in some $\mathcal F$-completion, this time furnishing the leaf with additional geometric data including a metric and curvature. We start by asking the following optimization question: Fix $n=3$ and consider a surface of revolution $S$ and an embedding $e:S \hookrightarrow X^3$ for $X^3=[0,1]^3$ with points $p,q$ elements of $\partial X^3$ where $\partial X^3=X^3-(0,1)^3$ for $\mathrm {sup}~ \mathrm{dist}(p,q)=\sqrt{3}$.    What is $\rho_{\mathrm{max}}=\mathrm{max} \lbrace \mathrm{vol}(S) \rbrace_{p,q}$ assuming $S$ must remain a surface of revolution and have constant positive Gaussian curvature? An abstract surface of revolution with constant positive Gaussian curvature (to be embedded/optimized) within $X^3.$ In other words, what is the volume of the largest surface of revolution with constant Gaussian curvature that can be embedded in $X^3$ with a pair of antipodal corners as cone points? Let ...

Consider a family of functions $$f_t(x) := e^{\frac{t}{\log x}}, \quad x \in (0,1), \quad t \in [1/2, 2],$$ each of which can be viewed as a smooth curve in the $(x, f)$-plane for fixed $t$. As $t$ varies, this defines a continuous family of curves, or equivalently, a surface embedded in the extended space $(x, f, t)$. We now define a topological gluing operation by identifying the boundary curves corresponding to $t = 1/2$ and $t = 2$ in the $(x, f)$-plane. The identification is performed along straight lines of slope $+1$, i.e., lines of the form $$f = x + b, \quad b \in [-1, 1].$$ Explicitly, we declare the point $(x, f_{1/2}(x))$ to be equivalent to $(x', f_2(x'))$ whenever both points lie on the same line of slope $+1$; that is, whenever $$f_{1/2}(x) - x = f_2(x') - x',$$ so that both have the same intercept $b \in [-1, 1]$. This identification defines an equivalence relation that glues the endpoints of the parameter domain $t \in [1/2, 2]$ together along a $1$-par...

The following diagram is a high explosive lens mold from the Manhattan project, drawn in secret by David Greenglass, to pass on to the Soviets: Below is a 3D symmetrical extension of this high explosive lens mold: This is precisely $\mathcal I$ which is a special subset of $CX_V$ in dimension $n=3$. You can see the outer colored loops that wrap around $\mathcal I$. This is a subset of $\Gamma$. This also gives a clean example of the coloring function $\phi: E \to \mathcal C$.  The flat local system $\mathcal L$ lives on these colored loops and it is inherited directly from the geometry of $\mathcal I$. Thus, we can form the enrichment $\mathcal X=(\phi,\mathcal L, \rho).$ For more details on this see the previous post:  https://jzdynamics.blogspot.com/2025/04/the-geometry-of-delta-groupoid.html .  Without going into too much detail on the physics - the right thing to do is to take geodesic flows along the white strands and add (i.e. direct sum) the force vectors restricte...