Pith Number

pith:KX4SY77V

pith:2018:KX4SY77VB3UNVE72S3IR52PKVI

not attested not anchored not stored refs pending

Reversibility of Extreme Relational Structures

Milo\v{s} S. Kurili\'c, Nenad Mora\v{c}a

arxiv:1803.09619 v1 · 2018-03-26 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KX4SY77VB3UNVE72S3IR52PKVI}

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	2026-05-18T00:20:10.917786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55f92c7ff50ee8da93fa96d11ee9eaaa15835a9f7812778cee1be16d05f41e0a

Aliases

arxiv: 1803.09619 · arxiv_version: 1803.09619v1 · doi: 10.48550/arxiv.1803.09619 · pith_short_12: KX4SY77VB3UN · pith_short_16: KX4SY77VB3UNVE72 · pith_short_8: KX4SY77V

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/KX4SY77VB3UNVE72S3IR52PKVI \
  | 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: 55f92c7ff50ee8da93fa96d11ee9eaaa15835a9f7812778cee1be16d05f41e0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "920947b9fc85dc2ca38d3d836c5111eb309d98ab75624c810ba610eef59d2489",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-03-26T14:27:55Z",
    "title_canon_sha256": "0649a4ec7c3ce9d553b51e878d58a811898dbf758b8a3d04ef64b1124681e93b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.09619",
    "kind": "arxiv",
    "version": 1
  }
}