Pith Number

pith:3ZBPZIIA

pith:2025:3ZBPZIIAS2PE5XGRYJLOR7EQWW

not attested not anchored not stored refs pending

The Chow--Witt rings of the classifying space of quadratically oriented bundles

Matthias Wendt, Thomas Brazelton

arxiv:2501.06302 v1 · 2025-01-10 · math.AT · math.AG · 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{3ZBPZIIAS2PE5XGRYJLOR7EQWW}

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	2026-07-05T10:00:00.910903Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de42fca100969e4edcd1c256e8fc90b58f7fec79dd456a4d0da893380997467e

Aliases

arxiv: 2501.06302 · arxiv_version: 2501.06302v1 · doi: 10.48550/arxiv.2501.06302 · pith_short_12: 3ZBPZIIAS2PE · pith_short_16: 3ZBPZIIAS2PE5XGR · pith_short_8: 3ZBPZIIA

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/3ZBPZIIAS2PE5XGRYJLOR7EQWW \
  | 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: de42fca100969e4edcd1c256e8fc90b58f7fec79dd456a4d0da893380997467e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6e3ad162fdbc39c2d6adf690b5ad80ec8a1c0c8ef2b366b159068b602a23359",
    "cross_cats_sorted": [
      "math.AG",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2025-01-10T19:00:31Z",
    "title_canon_sha256": "e40fc88f591b3223d513b0a5195ae0bcb257611091211a7c0a82e57ff5976814"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.06302",
    "kind": "arxiv",
    "version": 1
  }
}