Pith Number

pith:FDPA4QJF

pith:2025:FDPA4QJFKZR3S2ATBFQDOMEP6M

not attested not anchored not stored refs pending

Explicit classes in Habiro cohomology

Campbell Wheeler, Stavros Garoufalidis

arxiv:2505.19885 v1 · 2025-05-26 · math.AG · hep-th · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FDPA4QJFKZR3S2ATBFQDOMEP6M}

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	2026-07-05T11:09:49.490737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28de0e41255663b96813096037308ff3162778707a94090d1f84940038e4e811

Aliases

arxiv: 2505.19885 · arxiv_version: 2505.19885v1 · doi: 10.48550/arxiv.2505.19885 · pith_short_12: FDPA4QJFKZR3 · pith_short_16: FDPA4QJFKZR3S2AT · pith_short_8: FDPA4QJF

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/FDPA4QJFKZR3S2ATBFQDOMEP6M \
  | 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: 28de0e41255663b96813096037308ff3162778707a94090d1f84940038e4e811

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5f4a9e14c938c6ad12cf38d2192b43046851df0086e9a3e2788b32de6b65646",
    "cross_cats_sorted": [
      "hep-th",
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-05-26T12:14:08Z",
    "title_canon_sha256": "d0203dac5952eb385244ea5372e0c2782bde36dbc910c421ca61d8b4b3e5c271"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.19885",
    "kind": "arxiv",
    "version": 1
  }
}