Pith Number

pith:R6HKOZ2F

pith:2004:R6HKOZ2FB5TNT62GS7Y74GRRI2

not attested not anchored not stored refs pending

First cohomology, rigidity and deformations of isometric group actions

David Fisher

arxiv:math/0411121 v6 · 2004-11-05 · math.DG · math.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R6HKOZ2FB5TNT62GS7Y74GRRI2}

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	2026-05-18T03:32:45.954118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f8ea767450f66d9fb4697f1fe1a3146ae6f0dc772b65db942fd56f6dd28bb0c

Aliases

arxiv: math/0411121 · arxiv_version: math/0411121v6 · doi: 10.48550/arxiv.math/0411121 · pith_short_12: R6HKOZ2FB5TN · pith_short_16: R6HKOZ2FB5TNT62G · pith_short_8: R6HKOZ2F

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/R6HKOZ2FB5TNT62GS7Y74GRRI2 \
  | 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: 8f8ea767450f66d9fb4697f1fe1a3146ae6f0dc772b65db942fd56f6dd28bb0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "715e85b1ac3833128a42a83c876133f9dbc5314a6752fb299c8de3bd8e104f14",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "2004-11-05T18:48:42Z",
    "title_canon_sha256": "7ace6569db0ff3ca211164b67604fc5137c7cdffe4a4eab8a6be23e808ab9e85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0411121",
    "kind": "arxiv",
    "version": 6
  }
}