Pith Number

pith:IGX447WD

pith:2018:IGX447WD6JM52HJIAJTTMYQQFJ

not attested not anchored not stored refs pending

Converse theorem on a contraction metric for a periodic orbit

Peter Giesl

arxiv:1808.02689 v1 · 2018-08-08 · 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{IGX447WD6JM52HJIAJTTMYQQFJ}

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	2026-05-18T00:08:34.626776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41afce7ec3f259dd1d2802673662102a639d331a0f4474845463e41c2a90ae90

Aliases

arxiv: 1808.02689 · arxiv_version: 1808.02689v1 · doi: 10.48550/arxiv.1808.02689 · pith_short_12: IGX447WD6JM5 · pith_short_16: IGX447WD6JM52HJI · pith_short_8: IGX447WD

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/IGX447WD6JM52HJIAJTTMYQQFJ \
  | 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: 41afce7ec3f259dd1d2802673662102a639d331a0f4474845463e41c2a90ae90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cc8aa27cc764aeb784507d8ca999856473ed3b769900dd6894849adeac7ceb5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2018-08-08T09:27:53Z",
    "title_canon_sha256": "cf0c273d3f6bec41fc26a241f7d169e22f747f01c9a9173dbaa4501a9f8a1909"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02689",
    "kind": "arxiv",
    "version": 1
  }
}