Pith Number

pith:R4ZKNS4G

pith:2016:R4ZKNS4GR6GRVB65DPJM7ZXUEU

not attested not anchored not stored refs pending

The Picard group of motivic A(1)

Bogdan Gheorghe, Daniel C. Isaksen, Nicolas Ricka

arxiv:1606.05191 v1 · 2016-06-16 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R4ZKNS4GR6GRVB65DPJM7ZXUEU}

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	2026-05-18T01:12:21.856420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f32a6cb868f8d1a87dd1bd2cfe6f425344d0acd1dd672323398733741c594a6

Aliases

arxiv: 1606.05191 · arxiv_version: 1606.05191v1 · doi: 10.48550/arxiv.1606.05191 · pith_short_12: R4ZKNS4GR6GR · pith_short_16: R4ZKNS4GR6GRVB65 · pith_short_8: R4ZKNS4G

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/R4ZKNS4GR6GRVB65DPJM7ZXUEU \
  | 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: 8f32a6cb868f8d1a87dd1bd2cfe6f425344d0acd1dd672323398733741c594a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9f37d65ccc6ef694e484be1950a50274a8ce9f0fd783d74ed9224526b21e63a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2016-06-16T14:05:20Z",
    "title_canon_sha256": "c2474ec1bdd91a743d6312ea41606128c7944834308bb07a49d2386b10999c64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.05191",
    "kind": "arxiv",
    "version": 1
  }
}