Pith Number

pith:5IDJKLNR

pith:2013:5IDJKLNRD2ZTHC7BXE75DNSLJC

not attested not anchored not stored refs pending

The complement of a point subset in a projective space and a Grassmann space

Krzysztof Petelczyc, Mariusz \.Zynel

arxiv:1305.4662 v1 · 2013-05-20 · 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{5IDJKLNRD2ZTHC7BXE75DNSLJC}

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	2026-05-18T03:25:15.524515Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea06952db11eb3338be1b93fd1b64b48b611273f877b1b89c544747b22265630

Aliases

arxiv: 1305.4662 · arxiv_version: 1305.4662v1 · doi: 10.48550/arxiv.1305.4662 · pith_short_12: 5IDJKLNRD2ZT · pith_short_16: 5IDJKLNRD2ZTHC7B · pith_short_8: 5IDJKLNR

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/5IDJKLNRD2ZTHC7BXE75DNSLJC \
  | 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: ea06952db11eb3338be1b93fd1b64b48b611273f877b1b89c544747b22265630

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f56c2ea4d10986b246e987b49ae20ce8fbf3e0d2bc6cba3263a25885b2e2136",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-05-20T21:16:39Z",
    "title_canon_sha256": "28136d37d966c217b2ad7812acd6df0280a484c6b916d6040b3a42bb340ab2e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4662",
    "kind": "arxiv",
    "version": 1
  }
}