Pith Number

pith:YXHM27KZ

pith:2012:YXHM27KZUG553QQB2KX7JTH4XI

not attested not anchored not stored refs pending

Constant rank-distance sets of hermitian matrices and partial spreads in hermitian polar spaces

Fr\'ed\'eric Vanhove, John Sheekey, Michel Lavrauw, Rod Gow

arxiv:1208.1903 v2 · 2012-08-09 · 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{YXHM27KZUG553QQB2KX7JTH4XI}

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	2026-05-18T03:21:54.108851Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5cecd7d59a1bbddc201d2aff4ccfcba08c7655e95999792bc6b47607b679536

Aliases

arxiv: 1208.1903 · arxiv_version: 1208.1903v2 · doi: 10.48550/arxiv.1208.1903 · pith_short_12: YXHM27KZUG55 · pith_short_16: YXHM27KZUG553QQB · pith_short_8: YXHM27KZ

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/YXHM27KZUG553QQB2KX7JTH4XI \
  | 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: c5cecd7d59a1bbddc201d2aff4ccfcba08c7655e95999792bc6b47607b679536

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba1312d9bbd0269a3fec63c4e69104a49f0c4cbbaf7ab705b19f3ba3fa7e9f8d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-08-09T13:31:50Z",
    "title_canon_sha256": "14ffad0d485c5ae2abf564168f033aaf3fc5f1969c896fd2b019c74ccd80dbca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.1903",
    "kind": "arxiv",
    "version": 2
  }
}