Pith Number

pith:WKRQN447

pith:2018:WKRQN447TOUHEWIXIGNRCWY5XA

not attested not anchored not stored refs pending

Extension of positive maps

Erling St{\o}rmer

arxiv:1805.05148 v1 · 2018-05-14 · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WKRQN447TOUHEWIXIGNRCWY5XA}

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	2026-05-18T00:16:03.799791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2a306f39f9ba8725917419b115b1db83e59f304787a22b7d0ef402f4aa1f166

Aliases

arxiv: 1805.05148 · arxiv_version: 1805.05148v1 · doi: 10.48550/arxiv.1805.05148 · pith_short_12: WKRQN447TOUH · pith_short_16: WKRQN447TOUHEWIX · pith_short_8: WKRQN447

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/WKRQN447TOUHEWIXIGNRCWY5XA \
  | 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: b2a306f39f9ba8725917419b115b1db83e59f304787a22b7d0ef402f4aa1f166

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5786ec09f12e96cfd67ee70038484f908684b29da69761bd65493d36ab2ba78e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2018-05-14T12:49:57Z",
    "title_canon_sha256": "40d96c5555c4a94646ce7949a950cd9ac4808b5b3eb9f6ccc6be94c77e14ef51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.05148",
    "kind": "arxiv",
    "version": 1
  }
}