Pith Number

pith:OVPC2TAF

pith:2012:OVPC2TAF6UH33ZIAANBHXEKIQP

not attested not anchored not stored refs pending

Cohomological consequences of (almost) free torus actions

Manuel Amann

arxiv:1204.6276 v1 · 2012-04-27 · 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{OVPC2TAF6UH33ZIAANBHXEKIQP}

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	2026-05-18T03:56:46.551383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

755e2d4c05f50fbde50003427b914883c8907d38e2bfbe67071d7f5fcd5195a7

Aliases

arxiv: 1204.6276 · arxiv_version: 1204.6276v1 · doi: 10.48550/arxiv.1204.6276 · pith_short_12: OVPC2TAF6UH3 · pith_short_16: OVPC2TAF6UH33ZIA · pith_short_8: OVPC2TAF

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/OVPC2TAF6UH33ZIAANBHXEKIQP \
  | 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: 755e2d4c05f50fbde50003427b914883c8907d38e2bfbe67071d7f5fcd5195a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ca260653fb2e6bbc296d38f4d52acba02ec6777531e0d9c2a58ce7b067c181e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-04-27T17:31:51Z",
    "title_canon_sha256": "bca0f38612a9dde986769092fb8bc7625c67f27566cb4d0c5d3130609fa3b64d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.6276",
    "kind": "arxiv",
    "version": 1
  }
}