Pith Number

pith:6KCBO574

pith:2017:6KCBO5745Q4VEZPFXAYYWHUEPR

not attested not anchored not stored refs pending

Representing the deformation $\infty$-groupoid

Daniel Robert-Nicoud

arxiv:1702.02529 v3 · 2017-02-08 · math.AT · math.CT · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6KCBO5745Q4VEZPFXAYYWHUEPR}

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	2026-05-17T23:45:00.274387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2841777fcec395265e5b8318b1e847c43f48d40af53ee02ba8f75fa33f2f90c

Aliases

arxiv: 1702.02529 · arxiv_version: 1702.02529v3 · doi: 10.48550/arxiv.1702.02529 · pith_short_12: 6KCBO5745Q4V · pith_short_16: 6KCBO5745Q4VEZPF · pith_short_8: 6KCBO574

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/6KCBO5745Q4VEZPFXAYYWHUEPR \
  | 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: f2841777fcec395265e5b8318b1e847c43f48d40af53ee02ba8f75fa33f2f90c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "355ba7fac7d03cc442490eb76658fbdcb1b6aa89dd022786473c51330dfc4bf7",
    "cross_cats_sorted": [
      "math.CT",
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-02-08T17:18:52Z",
    "title_canon_sha256": "9dfd550dc660ce6069b185cc95bc40fa5427f7ad8f5af6e4d2d81cd668792c75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.02529",
    "kind": "arxiv",
    "version": 3
  }
}