Workshop Contents Listing for Graph and Groupoid Algebras

Definitions and mathematical statement

Unrecoverable mathematical statement. The supplied record consists of a table-of-contents fragment from Combinatorial $*$-algebras (2024). It lists contributions concerning graph and groupoid algebras but supplies no mathematical question, conjecture, or proposition. No definitions, domains, hypotheses, boundary conditions, or quantifiers specifying an intended problem can be recovered from this fragment. Consequently, a precise mathematical statement cannot be formulated from the supplied evidence.

The supplied statement_status is unrecoverable, and no clean statement is supplied. The record's verification note reports that the official report confirms the contents-listing character of the extraction; this is supplied verification information, not an independent verification here. The supplied open label reflects a dated triage rule for an unresolved extraction and does not establish that any particular mathematical conjecture is open. In particular, the reference to the Graded Classification Conjecture in a contribution title does not specify that conjecture or identify it as the intended problem.

Short English statement

This record preserves workshop contents and provenance, but contains no recoverable mathematical problem. Its supplied open label is an extraction-triage classification. A statement-only draft must remain unresolved until an actual problem passage and its hypotheses are supplied.

Sources

• Supplied local UnsolvedMath registry record, permanent ID 30005843, exact source code catalogue entry, title: Workshop Contents Listing for Graph and Groupoid Algebras. Collection: Oberwolfach Reports Open Problems. The supplied proposed year is 2024; no problem proposer is identified.
• Supplied report citation: Combinatorial $*$-algebras (2024), Oberwolfach Reports, pp. 731--788, DOI: 10.4171/owr/2024/12. Supplied source and literature-source link, labeled Combinatorial $*$-algebras: https://doi.org/10.4171/owr/2024/12. This report citation supplies provenance; the supplied excerpt itself is a contents listing.
• Contents attribution: Tran Giang Nam, On automorphisms of Leavitt path algebras and applications, p. 768.
• Contents attribution: Enrique Pardo (joint with Eduard Ortega), Modeling groupoid algebras using left cancellative small categories, p. 770.
• Contents attribution: Efren Ruiz (joint with Søren Eilers), Classification of graph $C^*$-algebras, p. 772.
• Contents attribution: Aidan Sims, $C^*$-algebraic representations of suspensions of graphs, p. 775.
• Contents attribution: Benjamin Steinberg (joint with Daniel van Wyk), On von Neumann Regularity of Ample Groupoid Algebras, p. 777.
• Contents attribution: Owen Tanner, Stein's groups as topological full groups, p. 779.
• Contents attribution: Jonathan Taylor, Functoriality for étale groupoid algebras, p. 780.
• Contents attribution: Lia Vaš, Porcupine-quotient graphs, the fourth primary color, and some updates about the Graded Classification Conjecture, p. 782.
• Supplied literature assessment dated 2026-08-22: the record is only a table-of-contents fragment and does not state a mathematical problem that can be verified; under the supplied triage rule, the unresolved extracted claim is labeled open. This is supplied dated curation, not independently verified. The background identifies the report link above as its checked source and requests independent verification of time-sensitive status and cited claims. The supplied statement-verification note likewise describes the extraction as a contents-listing fragment, says no separate clean statement is promoted, and says the original record remains publicly visible for provenance.