Pith Number

pith:KOSDYRCP

pith:2015:KOSDYRCPKPMKRW2EM5DXHMVTTQ

not attested not anchored not stored refs pending

Local and infinitesimal rigidity of simply connected negatively curved manifols

Kingshook Biswas

arxiv:1507.04974 v1 · 2015-07-17 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KOSDYRCPKPMKRW2EM5DXHMVTTQ}

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	2026-05-18T01:36:42.279605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53a43c444f53d8a8db44674773b2b39c1dbc66e54bc4f3f4ce67043f73eea857

Aliases

arxiv: 1507.04974 · arxiv_version: 1507.04974v1 · doi: 10.48550/arxiv.1507.04974 · pith_short_12: KOSDYRCPKPMK · pith_short_16: KOSDYRCPKPMKRW2E · pith_short_8: KOSDYRCP

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/KOSDYRCPKPMKRW2EM5DXHMVTTQ \
  | 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: 53a43c444f53d8a8db44674773b2b39c1dbc66e54bc4f3f4ce67043f73eea857

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f0b53427c56d6955c49c8d0251423a87c1e50a0acfa8c15f206c3a43685e4fa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-07-17T13:45:20Z",
    "title_canon_sha256": "2ece8da645e7ecb74995436f9a1b09d33e6e5ee9ab4b5f9c7aeb20f1d77d9212"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.04974",
    "kind": "arxiv",
    "version": 1
  }
}