Pith Number

pith:NUYLWHXQ

pith:2019:NUYLWHXQYYA7PAKAI3EGDMEDDI

not attested not anchored not stored refs pending

Fast and Simple Edge-Coloring Algorithms

Corwin Sinnamon

arxiv:1907.03201 v4 · 2019-07-06 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NUYLWHXQYYA7PAKAI3EGDMEDDI}

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.

Cited by

1 paper in Pith

The planar edge-coloring theorem of Vizing in $O(n\log n)$ time

Receipt and verification

First computed	2026-07-05T02:18:48.832439Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d30bb1ef0c601f7814046c861b0831a3bdcbaf2f735310b14ed70ac4f1a5b3b

Aliases

arxiv: 1907.03201 · arxiv_version: 1907.03201v4 · doi: 10.48550/arxiv.1907.03201 · pith_short_12: NUYLWHXQYYA7 · pith_short_16: NUYLWHXQYYA7PAKA · pith_short_8: NUYLWHXQ

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/NUYLWHXQYYA7PAKAI3EGDMEDDI \
  | 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: 6d30bb1ef0c601f7814046c861b0831a3bdcbaf2f735310b14ed70ac4f1a5b3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a3e2b7c71ebb42f92499a09ef55bf99da925a0ac31325825c8af44ee32f352c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-07-06T22:36:21Z",
    "title_canon_sha256": "914fa2bc0f67ec1750fc362226f1b1ee8b79b3048085c1da14c7a149402abb47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.03201",
    "kind": "arxiv",
    "version": 4
  }
}