Pith Number

pith:7MODWK5S

pith:2016:7MODWK5SSQMYSAOMTA4CAHGJMS

not attested not anchored not stored refs pending

The motivic class of the classifying stack of the special orthogonal group

Angelo Vistoli, Mattia Talpo

arxiv:1609.07864 v2 · 2016-09-26 · 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{7MODWK5SSQMYSAOMTA4CAHGJMS}

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	2026-05-18T00:40:51.557070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb1c3b2bb294198901cc9838201cc96496176d3b55d271c019a496e121f1e7d1

Aliases

arxiv: 1609.07864 · arxiv_version: 1609.07864v2 · doi: 10.48550/arxiv.1609.07864 · pith_short_12: 7MODWK5SSQMY · pith_short_16: 7MODWK5SSQMYSAOM · pith_short_8: 7MODWK5S

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/7MODWK5SSQMYSAOMTA4CAHGJMS \
  | 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: fb1c3b2bb294198901cc9838201cc96496176d3b55d271c019a496e121f1e7d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b18d7e1acfe253ef8906d49d271e3ff8ec48377c1144dc99902fd21c1797363",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-09-26T07:05:05Z",
    "title_canon_sha256": "77a578ad70ac73f9752a87c7f19033d2fd1506caaf0197dc7b0dbd91c12b9feb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.07864",
    "kind": "arxiv",
    "version": 2
  }
}