Pith Number

pith:LRLEWPWC

pith:2008:LRLEWPWCOD4O3YH3SL7PB4SM6K

not attested not anchored not stored refs pending

Super edge-graceful paths

Dalibor Froncek, Sylwia Cichacz, Wenjie Xu

arxiv:0804.3640 v1 · 2008-04-23 · 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{LRLEWPWCOD4O3YH3SL7PB4SM6K}

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	2026-05-18T03:58:38.526536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c564b3ec270f8ede0fb92fef0f24cf2936b5904d1b5303ea4214bbddc3c1191

Aliases

arxiv: 0804.3640 · arxiv_version: 0804.3640v1 · doi: 10.48550/arxiv.0804.3640 · pith_short_12: LRLEWPWCOD4O · pith_short_16: LRLEWPWCOD4O3YH3 · pith_short_8: LRLEWPWC

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/LRLEWPWCOD4O3YH3SL7PB4SM6K \
  | 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: 5c564b3ec270f8ede0fb92fef0f24cf2936b5904d1b5303ea4214bbddc3c1191

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53955852cb05c882238dcd6aa685b5a977982865eee7bb161cd081a241ee9a28",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2008-04-23T05:02:06Z",
    "title_canon_sha256": "5cd71d96538a7faea99ea0876b0dab676bbafdc8e8ffdef883ea841c7c7424a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.3640",
    "kind": "arxiv",
    "version": 1
  }
}