Pith Number

pith:YAHPP3EQ

pith:2009:YAHPP3EQUX3VJYW7Y5MUH7TGUM

not attested not anchored not stored refs pending

Observation of an exceptional point in a chaotic optical microcavity

Jai-Hyung Lee, Jeong-Bo Shim, Juhee Yang, Kyungwon An, Sang-Bum Lee, Sang Wook Kim, Songky Moon, Soo-Young Lee

arxiv:0905.4478 v2 · 2009-05-27 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YAHPP3EQUX3VJYW7Y5MUH7TGUM}

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	2026-05-18T02:13:31.520508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c00ef7ec90a5f754e2dfc75943fe66a305db982194d71dee2308be8ef33bb26b

Aliases

arxiv: 0905.4478 · arxiv_version: 0905.4478v2 · doi: 10.48550/arxiv.0905.4478 · pith_short_12: YAHPP3EQUX3V · pith_short_16: YAHPP3EQUX3VJYW7 · pith_short_8: YAHPP3EQ

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/YAHPP3EQUX3VJYW7Y5MUH7TGUM \
  | 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: c00ef7ec90a5f754e2dfc75943fe66a305db982194d71dee2308be8ef33bb26b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c293e2cbe8c4dd18c86805bb8f4fe969a88f0d9aa3176506dd16be48c793709",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2009-05-27T17:40:54Z",
    "title_canon_sha256": "007aada75d0081d12d4d1f40cf62a30309e728cd3d5ef84021deff381acf3867"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4478",
    "kind": "arxiv",
    "version": 2
  }
}