Pith Number

pith:SYPM3SPE

pith:2017:SYPM3SPER57VWBAYRVH6HFSKQX

not attested not anchored not stored refs pending

On J-Colorability of Certain Derived Graph Classes

Federico Fornasiero, Sudev Naduvath

arxiv:1708.09798 v2 · 2017-08-09 · math.GM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SYPM3SPER57VWBAYRVH6HFSKQX}

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	2026-05-18T00:36:08.111905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

961ecdc9e48f7f5b04188d4fe3964a85d9687b7d4841db3709ecf16d71528ae5

Aliases

arxiv: 1708.09798 · arxiv_version: 1708.09798v2 · doi: 10.48550/arxiv.1708.09798 · pith_short_12: SYPM3SPER57V · pith_short_16: SYPM3SPER57VWBAY · pith_short_8: SYPM3SPE

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/SYPM3SPER57VWBAYRVH6HFSKQX \
  | 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: 961ecdc9e48f7f5b04188d4fe3964a85d9687b7d4841db3709ecf16d71528ae5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bdee89a7c4aa6f4d3b00769d28233e650a14181e474ebd3d252a18e7a10ff191",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2017-08-09T20:23:29Z",
    "title_canon_sha256": "f7698ba2eb669fb17349289660212ee70b882b69f42fe734340aa6a43caae93b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.09798",
    "kind": "arxiv",
    "version": 2
  }
}