Pith Number

pith:MGAJM2MQ

pith:2015:MGAJM2MQXMT7BPA7IEKBRJCAUY

not attested not anchored not stored refs pending

Semirigid systems of three equivalence relations

Christian Delhomm\'e, Hisayuki Tatsumi, Ivo G.Rosenberg, Masahiro Miyakawa, Maurice Pouzet

arxiv:1505.02955 v1 · 2015-05-12 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MGAJM2MQXMT7BPA7IEKBRJCAUY}

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	2026-05-18T02:14:15.505456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6180966990bb27f0bc1f411418a440a6003bca13027cc54fa589993b0a2043cd

Aliases

arxiv: 1505.02955 · arxiv_version: 1505.02955v1 · doi: 10.48550/arxiv.1505.02955 · pith_short_12: MGAJM2MQXMT7 · pith_short_16: MGAJM2MQXMT7BPA7 · pith_short_8: MGAJM2MQ

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/MGAJM2MQXMT7BPA7IEKBRJCAUY \
  | 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: 6180966990bb27f0bc1f411418a440a6003bca13027cc54fa589993b0a2043cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c9686061f11f7db78b6977e5e0c7490e359f4cfaff9f6f0a1f2afbfad6fe837",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-05-12T10:57:44Z",
    "title_canon_sha256": "5c9ca23665d0a273da5a8285e005757d1b56aaaa540e0db8cc84a101886eb2ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.02955",
    "kind": "arxiv",
    "version": 1
  }
}