Pith Number

pith:6A64VLRL

pith:2014:6A64VLRLI7M3I4PWKL4I7354E7

not attested not anchored not stored refs pending

Decompositions of Edge-Colored Digraphs: A New Technique in the Construction of Constant-Weight Codes and Related Families

Alan Chi Hung Ling, Fei Gao, Han Mao Kiah, Hui Zhang, Xiande Zhang, Yeow Meng Chee

arxiv:1401.3925 v2 · 2014-01-16 · 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{6A64VLRLI7M3I4PWKL4I7354E7}

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	2026-05-18T03:01:45.649269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f03dcaae2b47d9b471f652f88fefbc27da79709266c842075331e24ef795d1b4

Aliases

arxiv: 1401.3925 · arxiv_version: 1401.3925v2 · doi: 10.48550/arxiv.1401.3925 · pith_short_12: 6A64VLRLI7M3 · pith_short_16: 6A64VLRLI7M3I4PW · pith_short_8: 6A64VLRL

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/6A64VLRLI7M3I4PWKL4I7354E7 \
  | 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: f03dcaae2b47d9b471f652f88fefbc27da79709266c842075331e24ef795d1b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de50b8022191347e451564c73d14dbd0f1eed3ca391fddeaa5c773b34be7fdb3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-01-16T08:20:25Z",
    "title_canon_sha256": "103051d52842d1a008088b3548671ba15f852f16c7b72c3d455f8aea724b63f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.3925",
    "kind": "arxiv",
    "version": 2
  }
}