Pith Number

pith:7OHB4PUX

pith:2013:7OHB4PUXKX7IYYZ2QNDFWMUJNX

not attested not anchored not stored refs pending

Implicit contractive maps in ordered metric spaces

Mihai Turinici

arxiv:1305.0832 v1 · 2013-05-03 · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7OHB4PUXKX7IYYZ2QNDFWMUJNX}

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	2026-05-18T03:26:31.600992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb8e1e3e9755fe8c633a83465b32896dee0caaecf834d19816af17cbdb856864

Aliases

arxiv: 1305.0832 · arxiv_version: 1305.0832v1 · doi: 10.48550/arxiv.1305.0832 · pith_short_12: 7OHB4PUXKX7I · pith_short_16: 7OHB4PUXKX7IYYZ2 · pith_short_8: 7OHB4PUX

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/7OHB4PUXKX7IYYZ2QNDFWMUJNX \
  | 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: fb8e1e3e9755fe8c633a83465b32896dee0caaecf834d19816af17cbdb856864

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a572707dba90c6c9464a150bee6d3a82e9f61df5e4186066af8d2e96e37dad5d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2013-05-03T20:03:32Z",
    "title_canon_sha256": "f3f16c00bc1fe6990d7ea2a94f849896e5c6715cbab48e0929450c218f2db754"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0832",
    "kind": "arxiv",
    "version": 1
  }
}