Skip to content

Author

Alec Kriebel

3 papers indexed here

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

#generative ai Open access Aug 2026

Triangle Hypersurfaces and a Sharp Identifiability Boundary for Level-2 K3P Networks

We classify regular full-dimensional stochastic containment among binary standard semi-directed strongly tree-child level-2 phylogenetic networks under the Kimura three-parameter (K3P) model. On the principal positive Fourier domain, a directed containment germ exists if and only if the labelled reduced trees of blobs agree and corresponding complete factors are either labelled-isomorphic or ordinarily triangle-redirected, with coherent boundary transports. The same condition is equivalent to a common full-dimensional regular germ and remains exact in strict continuous time. Thus no proper one-sided containment occurs in the strong class, and the semi-directed topology is generically identifiable and exactly reconstructible outside a proper exceptional set, modulo ordinary triangle redirection. The three ordinary K3P triangle orientations have generic normalized rank 14, share the same irreducible eight-term quartic hypersurface H₁₄ in normalized three-leaf Fourier space, and meet in a common strict continuous-time smooth rank-14 germ. The bounded residue consists of fourteen four-port directed relation orbits—nine polynomially separated and five directed-rank separated—plus two separately separated sink swaps. Exact restoration and coherent one- and two-port probes extend the bounded classification to arbitrary labelled subdivision words. Strong tree-childness is sharp against weakening to weak tree-childness. For every n ≥ 3, two weakly but not strongly tree-child networks have strict continuous-time K3P images sharing a common full-dimensional regular germ of dimension 6n − 3. This is the first Zenodo/DOI-bearing archival release of version 1.0.0 of the complete K3P level-2 classification and its reproducibility evidence. It contains the article, reader supplement, compile-complete source archives, canonical full proof archive, compact verifier, independent-referee replay package, exact manifest, checksums, citation metadata, and a file-level license notice. The deposited bytes correspond to immutable Git commit 0b76dd8e38f262ebe9ba8c1d23281853e334fef2, annotated tag k3p-level2-identifiability-v1.0.0 resolving to that commit, and full-archive SHA-256 4f84417f40b4e5ddae80b36d87dc7bb6d00389a573a58d0b82a2592c9f7c6403. The archive includes the previously completed all-producer regeneration evidence bound to unchanged mathematical inputs, together with successful exact and independently implemented replays, rigorous interval arithmetic where required, and fail-closed mutation tests. The present release changes bibliography, nonmathematical administrative/public-release prose, and release engineering only; unchanged multi-hour mathematical producers were not rerun during this dependency-scoped reseal. No empirical data set is used. Preprint; not peer reviewed by a journal. Generative-AI assistance and its verification workflow are disclosed in the article. Article, supplement, figures, documentation, and mathematical certificate data are licensed under CC BY 4.0; original verifier and build code are licensed under MIT, as mapped in LICENSES.md. No specific funding supported this work. The author declares no competing interests.

Alec Kriebel · 0 citations
#generative ai Open access Aug 2026

Generic Identifiability and Directed Containment for Strongly Tree-Child Level-2 Networks under the Kimura Two-Parameter Model: The Principal Positive Domain and Strict Continuous Time

We classify regular full-dimensional stochastic containment among binary standard semi-directed strongly tree-child level-2 phylogenetic networks under the Kimura two-parameter (K2P) model. On the principal positive Fourier domain D₊ = {(s,g): 02s−1}, a directed containment germ exists if and only if the two labelled networks are isomorphic after independently redirecting ordinary three-cycle factors. The same condition is equivalent to a common full-dimensional regular germ; in particular, no proper one-sided containment occurs. It follows that the semi-directed topology is generically identifiable modulo ordinary triangle redirection, and that its structural triangle class is exactly reconstructible away from a proper algebraic exceptional set. The proof combines displayed-quartet inequalities and exact whole-map identities, an exact two-sector bridge-fibre theorem, physical marginal submersions, localization, and a bounded graph-to-algebra classification of cycle and theta factors. The bounded classification is computer-assisted: every directed primitive relation, rank exclusion, restoration parent, transport, and one-/two-port probe is represented by an exact certificate with independent replay and mutation evidence. The classification transfers to the strict continuous-time domain 0<s<1, s²<g<1. For every n≥3, two weakly but not strongly tree-child level-2 networks have continuous-time K2P images sharing a regular germ of dimension 4n−3, proving sharpness of strong tree-childness. This record is the complete v1.0.5-r1 priority and reproducibility package: the 26-page article, 24-page reader supplement, compile-complete five-file source archive, deterministic 495-member referee/verifier archive, external archive-qualification report, checksum sidecars, and dual-license notice. The manuscript source is v1.0.5; revision r1 repairs only an auxiliary probe-current semantic binding and changes neither the theorem, manuscript, PDFs, nor frozen classification. The clean verifier replay passed 41/41 layers, and the focused semantic mutation suite rejected 20/20 attacks. Exact source bindings: package tag k2p-same-referee-package-v1.0.5-r1; annotated tag object 6c9c89d38f4f4cdc9c328d8bb1237458c617136d; commit e2f6e32e6fe885e90c8e83a8c5b00785e663a4ae; referee archive SHA-256 4564cd1f8cd95f670a2e0d9619babaf3c343762cfd8ceeb190cd17df72802889. Article, supplement, and certificate data are licensed under CC BY 4.0; verifier and build code are licensed under MIT. No specific funding supported this work. The author declares no competing interests. Generative-AI assistance and its verification workflow are disclosed in the article. No mixed-sign K2P classification is claimed.r

Alec Kriebel · 0 citations
#generative ai Open access Aug 2026

Generic Identifiability and Directed Containment for Strongly Tree-Child Level-2 Networks under the Kimura Two-Parameter Model: The Principal Positive Domain and Strict Continuous Time

We classify regular full-dimensional stochastic containment among binary standard semi-directed strongly tree-child level-2 phylogenetic networks under the Kimura two-parameter (K2P) model. On the principal positive Fourier domain D₊ = {(s,g): 02s−1}, a directed containment germ exists if and only if the two labelled networks are isomorphic after independently redirecting ordinary three-cycle factors. The same condition is equivalent to a common full-dimensional regular germ; in particular, no proper one-sided containment occurs. It follows that the semi-directed topology is generically identifiable modulo ordinary triangle redirection, and that its structural triangle class is exactly reconstructible away from a proper algebraic exceptional set. The proof combines displayed-quartet inequalities and exact whole-map identities, an exact two-sector bridge-fibre theorem, physical marginal submersions, localization, and a bounded graph-to-algebra classification of cycle and theta factors. The bounded classification is computer-assisted: every directed primitive relation, rank exclusion, restoration parent, transport, and one-/two-port probe is represented by an exact certificate with independent replay and mutation evidence. The classification transfers to the strict continuous-time domain 0<s<1, s²<g<1. For every n≥3, two weakly but not strongly tree-child level-2 networks have continuous-time K2P images sharing a regular germ of dimension 4n−3, proving sharpness of strong tree-childness. This record is the complete v1.0.5-r1 priority and reproducibility package: the 26-page article, 24-page reader supplement, compile-complete five-file source archive, deterministic 495-member referee/verifier archive, external archive-qualification report, checksum sidecars, and dual-license notice. The manuscript source is v1.0.5; revision r1 repairs only an auxiliary probe-current semantic binding and changes neither the theorem, manuscript, PDFs, nor frozen classification. The clean verifier replay passed 41/41 layers, and the focused semantic mutation suite rejected 20/20 attacks. Exact source bindings: package tag k2p-same-referee-package-v1.0.5-r1; annotated tag object 6c9c89d38f4f4cdc9c328d8bb1237458c617136d; commit e2f6e32e6fe885e90c8e83a8c5b00785e663a4ae; referee archive SHA-256 4564cd1f8cd95f670a2e0d9619babaf3c343762cfd8ceeb190cd17df72802889. Article, supplement, and certificate data are licensed under CC BY 4.0; verifier and build code are licensed under MIT. No specific funding supported this work. The author declares no competing interests. Generative-AI assistance and its verification workflow are disclosed in the article. No mixed-sign K2P classification is claimed.r

Alec Kriebel · 2 citations