Pith Number

pith:SQMXWNVM

pith:2018:SQMXWNVM5MGWO3CW2V7IZC2Y27

not attested not anchored not stored refs pending

On graphs with 2 trivial distance ideals

Carlos A. Alfaro

arxiv:1807.07992 v2 · 2018-07-20 · math.CO · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SQMXWNVM5MGWO3CW2V7IZC2Y27}

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	2026-05-18T00:09:58.026090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94197b36aceb0d676c56d57e8c8b58d7eb9096a719ed75a40b37482876cf8a25

Aliases

arxiv: 1807.07992 · arxiv_version: 1807.07992v2 · doi: 10.48550/arxiv.1807.07992 · pith_short_12: SQMXWNVM5MGW · pith_short_16: SQMXWNVM5MGWO3CW · pith_short_8: SQMXWNVM

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/SQMXWNVM5MGWO3CW2V7IZC2Y27 \
  | 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: 94197b36aceb0d676c56d57e8c8b58d7eb9096a719ed75a40b37482876cf8a25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44f683b5a40be3adc067ae7415bf2c482b59d50e98385f82e7480db87418b50c",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-07-20T18:27:17Z",
    "title_canon_sha256": "1312b65cdbda1d1522445709c48b14f05503ad1557e59917fdcaba001b84d5bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07992",
    "kind": "arxiv",
    "version": 2
  }
}