Pith Number

pith:DBYA7DIW

pith:2025:DBYA7DIW6VA6PY5JW6J6DI5K6N

not attested not anchored not stored refs pending

Invertible projective 2-representations from invertible 2d TQFTs with defects

Chetan Vuppulury, Domenico Fiorenza

arxiv:2509.16626 v2 · 2025-09-20 · math.CT · math-ph · math.MP · math.QA · math.RT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DBYA7DIW6VA6PY5JW6J6DI5K6N}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-08T01:19:06.670672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18700f8d16f541e7e3a9b793e1a3aaf344cd74091bbc15917be17825e77cc07c

Aliases

arxiv: 2509.16626 · arxiv_version: 2509.16626v2 · doi: 10.48550/arxiv.2509.16626 · pith_short_12: DBYA7DIW6VA6 · pith_short_16: DBYA7DIW6VA6PY5J · pith_short_8: DBYA7DIW

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/DBYA7DIW6VA6PY5JW6J6DI5K6N \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 18700f8d16f541e7e3a9b793e1a3aaf344cd74091bbc15917be17825e77cc07c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d16f7d9669d5f212fee738cca3f690aeb992eb7b294ad3db99b15536966767e4",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "math.QA",
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2025-09-20T11:05:15Z",
    "title_canon_sha256": "c701f740a7dc9a1754e8a727e98788d4be0b7ba1042eeb9ada5c3c5082537f3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.16626",
    "kind": "arxiv",
    "version": 2
  }
}