Pith Number

pith:PMU74YDX

pith:2018:PMU74YDX3SIFIL4YK7VJ7RBOML

not attested not anchored not stored refs pending

Affine quadrics and the Picard group of the motivic category

Alexander Vishik

arxiv:1802.06112 v2 · 2018-02-16 · math.AG · math.AT · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PMU74YDX3SIFIL4YK7VJ7RBOML}

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	2026-05-17T23:41:13.296640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b29fe6077dc90542f9857ea9fc42e62c5f9df668802429eabd5b7763f4e1ac4

Aliases

arxiv: 1802.06112 · arxiv_version: 1802.06112v2 · doi: 10.48550/arxiv.1802.06112 · pith_short_12: PMU74YDX3SIF · pith_short_16: PMU74YDX3SIFIL4Y · pith_short_8: PMU74YDX

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/PMU74YDX3SIFIL4YK7VJ7RBOML \
  | 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: 7b29fe6077dc90542f9857ea9fc42e62c5f9df668802429eabd5b7763f4e1ac4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95531ecc3b0d7783f025c76f725f23e95e3578cf1383a139d70e8a14970bb062",
    "cross_cats_sorted": [
      "math.AT",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-02-16T20:33:00Z",
    "title_canon_sha256": "6461d5813db39ee86f945c003921c8a3e4bb7d66a73bb0b91f41c6c1d1225505"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06112",
    "kind": "arxiv",
    "version": 2
  }
}