Pith Number

pith:6AKI4ETT

pith:2012:6AKI4ETTB62TJS6EH7OTCZLWN5

not attested not anchored not stored refs pending

Construction of a CPA contraction metric for periodic orbits using semidefinite optimization

Peter Giesl, Sigurdur Hafstein

arxiv:1211.3022 v1 · 2012-11-13 · 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{6AKI4ETTB62TJS6EH7OTCZLWN5}

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	2026-05-18T03:40:52.039375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0148e12730fb534cbc43fdd3165766f49d49d096b30c0c3a02490e97de28f0a

Aliases

arxiv: 1211.3022 · arxiv_version: 1211.3022v1 · doi: 10.48550/arxiv.1211.3022 · pith_short_12: 6AKI4ETTB62T · pith_short_16: 6AKI4ETTB62TJS6E · pith_short_8: 6AKI4ETT

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/6AKI4ETTB62TJS6EH7OTCZLWN5 \
  | 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: f0148e12730fb534cbc43fdd3165766f49d49d096b30c0c3a02490e97de28f0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "634cbf691ab47e9b4311a4c822a5254307eda0450a15d0de5465679d863356ce",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2012-11-13T15:41:44Z",
    "title_canon_sha256": "666e88ae07fae7554dbdfb025eb66ea7f9c6c62a1586bb02bd24ebf37925d918"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3022",
    "kind": "arxiv",
    "version": 1
  }
}