Pith Number

pith:SY36A3AS

pith:2017:SY36A3AS2PSVFGQ4GGIEP3FI4D

not attested not anchored not stored refs pending

Equitable neighbour-sum-distinguishing edge and total colourings

Eric Sopena (LaBRI), Jakub Przybylo, Mariusz Wozniak, Mohammed Senhaji (LaBRI), Monika Pilsniak, Olivier Baudon (LaBRI)

arxiv:1701.04648 v1 · 2017-01-17 · cs.DM · 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{SY36A3AS2PSVFGQ4GGIEP3FI4D}

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	2026-05-18T00:52:43.011651Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9637e06c12d3e5529a1c319047eca8e0e698ff19044186f90eab57db4695143b

Aliases

arxiv: 1701.04648 · arxiv_version: 1701.04648v1 · doi: 10.48550/arxiv.1701.04648 · pith_short_12: SY36A3AS2PSV · pith_short_16: SY36A3AS2PSVFGQ4 · pith_short_8: SY36A3AS

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/SY36A3AS2PSVFGQ4GGIEP3FI4D \
  | 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: 9637e06c12d3e5529a1c319047eca8e0e698ff19044186f90eab57db4695143b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0cfcda9b9de474fc307ace9c53829eaa139510e08526d17f16a8d6881faa3e8",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-01-17T12:44:23Z",
    "title_canon_sha256": "9004a6b76c39d20a517645225ffbe6b2315027b505619e5059e0341779d48d67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.04648",
    "kind": "arxiv",
    "version": 1
  }
}