Pith Number

pith:WHKDSUGO

pith:2013:WHKDSUGOODAEFU4SMPS6JH34DB

not attested not anchored not stored refs pending

Bredon cohomological dimensions for proper actions and Mackey functors

Dieter Degrijse

arxiv:1305.1227 v1 · 2013-05-06 · math.AT · 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{WHKDSUGOODAEFU4SMPS6JH34DB}

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	2026-05-18T02:26:01.134058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1d43950ce70c042d39263e5e49f7c186fe1e80851f8a0d0ecef38ac598dfd42

Aliases

arxiv: 1305.1227 · arxiv_version: 1305.1227v1 · doi: 10.48550/arxiv.1305.1227 · pith_short_12: WHKDSUGOODAE · pith_short_16: WHKDSUGOODAEFU4S · pith_short_8: WHKDSUGO

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/WHKDSUGOODAEFU4SMPS6JH34DB \
  | 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: b1d43950ce70c042d39263e5e49f7c186fe1e80851f8a0d0ecef38ac598dfd42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b263f022c2483bf625d90b575c8d400011641be53d83aaf0fe6d7222ebbdc37f",
    "cross_cats_sorted": [
      "math.GR",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2013-05-06T15:42:35Z",
    "title_canon_sha256": "d8d588a6095d1a2e718d167d9c982721b3dfbe42ccf55b4b999e232f98fa7d01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.1227",
    "kind": "arxiv",
    "version": 1
  }
}