Pith Number

pith:TEIP5ZH2

pith:2013:TEIP5ZH2TGVX5C3IHSY6ILYZ5C

not attested not anchored not stored refs pending

Incidence Matrices of Polarized Projective Spaces

Chunlei Liu, Haode Yan

arxiv:1304.6218 v1 · 2013-04-23 · math.NT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TEIP5ZH2TGVX5C3IHSY6ILYZ5C}

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	2026-05-18T03:27:22.054233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9910fee4fa99ab7e8b683cb1e42f19e8a37cd4ae61d36870de61cfbadc81ef25

Aliases

arxiv: 1304.6218 · arxiv_version: 1304.6218v1 · doi: 10.48550/arxiv.1304.6218 · pith_short_12: TEIP5ZH2TGVX · pith_short_16: TEIP5ZH2TGVX5C3I · pith_short_8: TEIP5ZH2

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/TEIP5ZH2TGVX5C3IHSY6ILYZ5C \
  | 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: 9910fee4fa99ab7e8b683cb1e42f19e8a37cd4ae61d36870de61cfbadc81ef25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d3a74d7c7e481565046a95fdc6f246f011c3867ca823fe13dedefc644e44aa9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2013-04-23T10:25:41Z",
    "title_canon_sha256": "7da4b9dd97254d2eddb5cbd14446b736e1f6373c24c58119d6dcc019cae51df1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6218",
    "kind": "arxiv",
    "version": 1
  }
}