Pith Number

pith:CSDEUBH5

pith:2007:CSDEUBH56RNTFDXUJ7JDRFCHS2

not attested not anchored not stored refs pending

Assembly Maps for Group Extensions in $K$-Theory and $L$-Theory with Twisted Coefficients

David Rosenthal, Erik K. Pedersen, Ian Hambleton

arxiv:0709.0437 v2 · 2007-09-04 · math.KT · 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{CSDEUBH56RNTFDXUJ7JDRFCHS2}

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	2026-05-18T03:34:12.600794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14864a04fdf45b328ef44fd2389447968b464782b220d5fa4ef61c0c15260afb

Aliases

arxiv: 0709.0437 · arxiv_version: 0709.0437v2 · doi: 10.48550/arxiv.0709.0437 · pith_short_12: CSDEUBH56RNT · pith_short_16: CSDEUBH56RNTFDXU · pith_short_8: CSDEUBH5

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/CSDEUBH56RNTFDXUJ7JDRFCHS2 \
  | 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: 14864a04fdf45b328ef44fd2389447968b464782b220d5fa4ef61c0c15260afb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "342472d7b3626434b1aa29921200f8bd9de77fb7aac5039bb30681fc5d335c55",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "",
    "primary_cat": "math.KT",
    "submitted_at": "2007-09-04T14:19:55Z",
    "title_canon_sha256": "fe55a0603121ae93072adab341977512ae3f426530cc17415c0c3fec8d553260"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.0437",
    "kind": "arxiv",
    "version": 2
  }
}