Pith Number

pith:UJMQGYQD

pith:2013:UJMQGYQDH5LMRTC3D4NFH7ONAI

not attested not anchored not stored refs pending

Uniqueness in Determining Refractive Indices by Formally-determined Far-field Data

Guanghui Hu, Hongyu Liu

arxiv:1308.5955 v1 · 2013-08-27 · math.AP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UJMQGYQDH5LMRTC3D4NFH7ONAI}

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	2026-05-18T03:14:50.688892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2590362033f56c8cc5b1f1a53fdcd020632742842d735494e5e0ad634621799

Aliases

arxiv: 1308.5955 · arxiv_version: 1308.5955v1 · doi: 10.48550/arxiv.1308.5955 · pith_short_12: UJMQGYQDH5LM · pith_short_16: UJMQGYQDH5LMRTC3 · pith_short_8: UJMQGYQD

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/UJMQGYQDH5LMRTC3D4NFH7ONAI \
  | 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: a2590362033f56c8cc5b1f1a53fdcd020632742842d735494e5e0ad634621799

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20bd5067cea33d3aad1db23878f6af1b7a7af112d2025e1506cf79e398f256cb",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-08-27T19:23:33Z",
    "title_canon_sha256": "e7a1180610e7a22aa0b2adeb26246736305174ecc0d54ff7d4805ec58cade3f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.5955",
    "kind": "arxiv",
    "version": 1
  }
}