Pith Number

pith:6U7YNFA4

pith:2009:6U7YNFA4GPTCQHG4FWGOU4DBNZ

not attested not anchored not stored refs pending

One-Parameter Homothetic Motion in the Hyperbolic Plane and Euler-Savary Formula

Mahmut Akyigit, Soley Ersoy

arxiv:1001.0137 v1 · 2009-12-31 · math.DG · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6U7YNFA4GPTCQHG4FWGOU4DBNZ}

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	2026-05-18T02:55:27.989035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f53f86941c33e6281cdc2d8cea70616e7db80209b511af0e4c13a467433c6328

Aliases

arxiv: 1001.0137 · arxiv_version: 1001.0137v1 · doi: 10.48550/arxiv.1001.0137 · pith_short_12: 6U7YNFA4GPTC · pith_short_16: 6U7YNFA4GPTCQHG4 · pith_short_8: 6U7YNFA4

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/6U7YNFA4GPTCQHG4FWGOU4DBNZ \
  | 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: f53f86941c33e6281cdc2d8cea70616e7db80209b511af0e4c13a467433c6328

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9249dfd83bc733267adf7f168323245b1e8a1f4d67cd5499c057237ef689d10",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-12-31T13:52:43Z",
    "title_canon_sha256": "79adc24144735d1a2d6804c9843b12644c143bfdef5da81b3001416e257ba008"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.0137",
    "kind": "arxiv",
    "version": 1
  }
}