Pith Number

pith:UNSHDRUH

pith:2015:UNSHDRUHLI3VLG2YFGLQ35QGFP

not attested not anchored not stored refs pending

A note on a fixed point theorem on topological cylinders

Guglielmo Feltrin

arxiv:1503.07844 v1 · 2015-03-19 · math.GN · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UNSHDRUHLI3VLG2YFGLQ35QGFP}

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	2026-05-18T02:20:18.570091Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a36471c6875a37559b5829970df6062bd884d4691a2f8b1d20e47dec337fb7b1

Aliases

arxiv: 1503.07844 · arxiv_version: 1503.07844v1 · doi: 10.48550/arxiv.1503.07844 · pith_short_12: UNSHDRUHLI3V · pith_short_16: UNSHDRUHLI3VLG2Y · pith_short_8: UNSHDRUH

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/UNSHDRUHLI3VLG2YFGLQ35QGFP \
  | 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: a36471c6875a37559b5829970df6062bd884d4691a2f8b1d20e47dec337fb7b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2123c514cef61beaa1e3ba2f37c9c2510c83ad735103e3675fbebed7621ec6be",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2015-03-19T09:00:05Z",
    "title_canon_sha256": "b73c2e7a2430eef2c08af0d4752ed97aa9fc6efdb65f18227e8e18b790bb19e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.07844",
    "kind": "arxiv",
    "version": 1
  }
}