Pith Number

pith:TAAN3DM2

pith:2019:TAAN3DM2URPNPV2C65KHLKPUL7

not attested not anchored not stored refs pending

Representing Polish groupoids via metric structures

Ruiyuan Chen

arxiv:1908.03268 v1 · 2019-08-08 · math.LO · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TAAN3DM2URPNPV2C65KHLKPUL7}

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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.

Cited by

1 paper in Pith

The generalized continuous model theory, Borel complexity and stability

Receipt and verification

First computed	2026-07-04T23:52:38.007226Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9800dd8d9aa45ed7d742f75475a9f45fc4af58e4889d77b8301e63a7e8a321ea

Aliases

arxiv: 1908.03268 · arxiv_version: 1908.03268v1 · doi: 10.48550/arxiv.1908.03268 · pith_short_12: TAAN3DM2URPN · pith_short_16: TAAN3DM2URPNPV2C · pith_short_8: TAAN3DM2

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/TAAN3DM2URPNPV2C65KHLKPUL7 \
  | 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: 9800dd8d9aa45ed7d742f75475a9f45fc4af58e4889d77b8301e63a7e8a321ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87d1eee81f46b98c0e9cc4ab8becc4a90cf3dc0a988db162abf9f08f20bd6389",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-08-08T21:21:58Z",
    "title_canon_sha256": "9925380f626b784468638299c32fb89bdcf8af45eb8408a0bb7b19f403d5ebe8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.03268",
    "kind": "arxiv",
    "version": 1
  }
}