Pith Number

pith:DNBRIMTK

pith:2013:DNBRIMTK5SFDXBSTONFXT5KTSW

not attested not anchored not stored refs pending

A cross-intersection theorem for vector spaces based on semidefinite programming

Hajime Tanaka, Sho Suda

arxiv:1304.5466 v1 · 2013-04-19 · 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{DNBRIMTK5SFDXBSTONFXT5KTSW}

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	2026-05-18T02:55:36.461841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b4314326aec8a3b8653734b79f55395b332cd2d6ec0c892ecb9611c40d150d7

Aliases

arxiv: 1304.5466 · arxiv_version: 1304.5466v1 · doi: 10.48550/arxiv.1304.5466 · pith_short_12: DNBRIMTK5SFD · pith_short_16: DNBRIMTK5SFDXBST · pith_short_8: DNBRIMTK

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/DNBRIMTK5SFDXBSTONFXT5KTSW \
  | 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: 1b4314326aec8a3b8653734b79f55395b332cd2d6ec0c892ecb9611c40d150d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "623fb7c9953aebce6f87594041e93983de748983b7f8065795df6f3ab446a4c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-04-19T16:21:47Z",
    "title_canon_sha256": "464733532a4cd3124c26293cc84292e958eb56954744cad0fabb23077d159eb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5466",
    "kind": "arxiv",
    "version": 1
  }
}