Pith Number

pith:DSJR464L

pith:2017:DSJR464LBJ3DHVYANXTBKZ5TTV

not attested not anchored not stored refs pending

On some permanence properties of exact groupoids

Scott M. LaLonde

arxiv:1703.05190 v3 · 2017-03-15 · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DSJR464LBJ3DHVYANXTBKZ5TTV}

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	2026-05-18T00:01:30.653143Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c931e7b8b0a7633d7006de61567b39d64581e0806476a7d877913008396d669

Aliases

arxiv: 1703.05190 · arxiv_version: 1703.05190v3 · doi: 10.48550/arxiv.1703.05190 · pith_short_12: DSJR464LBJ3D · pith_short_16: DSJR464LBJ3DHVYA · pith_short_8: DSJR464L

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/DSJR464LBJ3DHVYANXTBKZ5TTV \
  | 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: 1c931e7b8b0a7633d7006de61567b39d64581e0806476a7d877913008396d669

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5db14a8405caef3b11277307e1da1323cb67f14765943fb154105f48c851982",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2017-03-15T14:50:03Z",
    "title_canon_sha256": "a569cf90d473f5990aaa9c1f8de774fd2ed6d32a1a72e2e700be1ec87bce1d46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.05190",
    "kind": "arxiv",
    "version": 3
  }
}