Pith Number

pith:BWURLQMZ

pith:2018:BWURLQMZ3X74CYUEAB5G2BTLQX

not attested not anchored not stored refs pending

An algorithm to construct the Le diagram associated to a Grassmann necklace

Sian Fryer, Susama Agarwala

arxiv:1803.01726 v1 · 2018-03-05 · 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{BWURLQMZ3X74CYUEAB5G2BTLQX}

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	2026-05-18T00:21:59.735117Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0da915c199ddffc16284007a6d066b85f607b09740d0dd9946f8f7eaf83e3dd9

Aliases

arxiv: 1803.01726 · arxiv_version: 1803.01726v1 · doi: 10.48550/arxiv.1803.01726 · pith_short_12: BWURLQMZ3X74 · pith_short_16: BWURLQMZ3X74CYUE · pith_short_8: BWURLQMZ

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/BWURLQMZ3X74CYUEAB5G2BTLQX \
  | 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: 0da915c199ddffc16284007a6d066b85f607b09740d0dd9946f8f7eaf83e3dd9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e81f0a98d522db94c601fcdc97be4ebad2092ae9d72735ac54b31206ccc6123e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-03-05T15:24:21Z",
    "title_canon_sha256": "7e246d10a113562e17242a87a3bc26ba60cbfa346e4d9bf26235069e4b40f0fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.01726",
    "kind": "arxiv",
    "version": 1
  }
}