Pith Number

pith:DPZSDCMX

pith:2015:DPZSDCMXWOODRX2UWUGRH2MFC4

not attested not anchored not stored refs pending

On the Invertibility of Motives of Affine Quadrics

Tom Bachmann

arxiv:1506.07377 v4 · 2015-06-24 · math.KT · math.AG · 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{DPZSDCMXWOODRX2UWUGRH2MFC4}

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	2026-05-18T00:35:35.998423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1bf3218997b39c38df54b50d13e9851715e191eaa806805175a2ef7034d9071f

Aliases

arxiv: 1506.07377 · arxiv_version: 1506.07377v4 · doi: 10.48550/arxiv.1506.07377 · pith_short_12: DPZSDCMXWOOD · pith_short_16: DPZSDCMXWOODRX2U · pith_short_8: DPZSDCMX

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/DPZSDCMXWOODRX2UWUGRH2MFC4 \
  | 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: 1bf3218997b39c38df54b50d13e9851715e191eaa806805175a2ef7034d9071f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2b49c793f1d66208ca3a9df357bc38da70f06b00b48dd01a94816632a347ce9",
    "cross_cats_sorted": [
      "math.AG",
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2015-06-24T14:22:52Z",
    "title_canon_sha256": "baec3ee74bc3f0899cafdf29796adf5656c3f2351e4b9ecd7da8c4cee6e22df3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.07377",
    "kind": "arxiv",
    "version": 4
  }
}