Pith Number

pith:DB5BSFMV

pith:2010:DB5BSFMV63ZV3BUFD5DCMY7IN2

not attested not anchored not stored refs pending

The extension algebra of some cohomological Mackey functors

Radu Stancu (LAMFA), Serge Bouc (LAMFA)

arxiv:1010.1346 v1 · 2010-10-07 · math.GR · 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{DB5BSFMV63ZV3BUFD5DCMY7IN2}

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	2026-05-18T04:39:41.332167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

187a191595f6f35d86851f462663e86e947646332fbcdbe89f680ece82571ffd

Aliases

arxiv: 1010.1346 · arxiv_version: 1010.1346v1 · doi: 10.48550/arxiv.1010.1346 · pith_short_12: DB5BSFMV63ZV · pith_short_16: DB5BSFMV63ZV3BUF · pith_short_8: DB5BSFMV

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/DB5BSFMV63ZV3BUFD5DCMY7IN2 \
  | 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: 187a191595f6f35d86851f462663e86e947646332fbcdbe89f680ece82571ffd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f11166cb77e05957af808727dfbd9375521c0e3dd6254371658aad8778653312",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2010-10-07T06:49:07Z",
    "title_canon_sha256": "e74fcf5753d48f1f4d3e5aab49dc4e192ef6b5b40014adaa3bf93451119bf871"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.1346",
    "kind": "arxiv",
    "version": 1
  }
}