Pith Number

pith:BBBJ7AED

pith:2015:BBBJ7AED3QFPGOQBPJSEVF7K4R

not attested not anchored not stored refs pending

Inclusion Matrices and the MDS Conjecture

Ameera Chowdhury

arxiv:1511.03623 v3 · 2015-11-11 · 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{BBBJ7AED3QFPGOQBPJSEVF7K4R}

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	2026-05-18T01:00:10.009057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08429f8083dc0af33a017a644a97eae45469238bc8e9e2de581869903152fe61

Aliases

arxiv: 1511.03623 · arxiv_version: 1511.03623v3 · doi: 10.48550/arxiv.1511.03623 · pith_short_12: BBBJ7AED3QFP · pith_short_16: BBBJ7AED3QFPGOQB · pith_short_8: BBBJ7AED

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/BBBJ7AED3QFPGOQBPJSEVF7K4R \
  | 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: 08429f8083dc0af33a017a644a97eae45469238bc8e9e2de581869903152fe61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f860f11d368ff6d84b998beef60631cddfaee4e115c342e4da83b08ebf3e8c25",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-11-11T19:44:06Z",
    "title_canon_sha256": "a5529c358e7fc27cd63b3c81f62549c82028553db58f47b9d9b3525256cd7d7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.03623",
    "kind": "arxiv",
    "version": 3
  }
}