Pith Number

pith:WFPFFWNY

pith:2018:WFPFFWNYXGXVQKRVEYYXEB5A4H

not attested not anchored not stored refs pending

Types of Linkage of Quadratic Pfister Forms

Adam Chapman, Andrew Dolphin

arxiv:1806.03603 v3 · 2018-06-10 · math.AC · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WFPFFWNYXGXVQKRVEYYXEB5A4H}

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	2026-05-18T00:01:09.262608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b15e52d9b8b9af582a3526317207a0e1e78965b290ec6bae170d838beef1e5dc

Aliases

arxiv: 1806.03603 · arxiv_version: 1806.03603v3 · doi: 10.48550/arxiv.1806.03603 · pith_short_12: WFPFFWNYXGXV · pith_short_16: WFPFFWNYXGXVQKRV · pith_short_8: WFPFFWNY

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/WFPFFWNYXGXVQKRVEYYXEB5A4H \
  | 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: b15e52d9b8b9af582a3526317207a0e1e78965b290ec6bae170d838beef1e5dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c327fe4c975d8872385e4398b1e56f4ae85ece04e2c49ba488b34ce47538926d",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2018-06-10T07:40:34Z",
    "title_canon_sha256": "e6c24bc8707fc8438b17a8e227702a8ca49789beb69c38a36bad1963d14deb18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.03603",
    "kind": "arxiv",
    "version": 3
  }
}