Pith Number

pith:6ATNGCZO

pith:2012:6ATNGCZOB6L2JCIC5Z2EY2JPIT

not attested not anchored not stored refs pending

The weight filtration for real algebraic varieties II: Classical homology

Adam Parusinski, Clint McCrory

arxiv:1202.3129 v2 · 2012-02-14 · 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{6ATNGCZOB6L2JCIC5Z2EY2JPIT}

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	2026-05-18T00:52:55.767099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f026d30b2e0f97a48902ee744c692f44dc9d4326ee870d4d840fea3fce367175

Aliases

arxiv: 1202.3129 · arxiv_version: 1202.3129v2 · doi: 10.48550/arxiv.1202.3129 · pith_short_12: 6ATNGCZOB6L2 · pith_short_16: 6ATNGCZOB6L2JCIC · pith_short_8: 6ATNGCZO

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/6ATNGCZOB6L2JCIC5Z2EY2JPIT \
  | 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: f026d30b2e0f97a48902ee744c692f44dc9d4326ee870d4d840fea3fce367175

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be812b349315046ad50e360b0f41aa1d0f85a8045d81eede964e6d3ff04af159",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-02-14T20:06:53Z",
    "title_canon_sha256": "d6ca6461ab1ebead53f8b668b18e70cf6dab6819fd289bdbbf1931aa985648aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3129",
    "kind": "arxiv",
    "version": 2
  }
}