Pith Number

pith:Q4O55C24

pith:2016:Q4O55C24BCSEF4GIPWKKCKJQJ3

not attested not anchored not stored refs pending

Unique determination of the index of refraction from phase-less near-field data in two dimensions

Fadil Santosa, Gunther Uhlmann, Yat Tin Chow

arxiv:1603.06661 v3 · 2016-03-22 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q4O55C24BCSEF4GIPWKKCKJQJ3}

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	2026-05-18T01:10:17.953039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

871dde8b5c08a442f0c87d94a129304ef826e58895ef297b3796dfd96fbc9357

Aliases

arxiv: 1603.06661 · arxiv_version: 1603.06661v3 · doi: 10.48550/arxiv.1603.06661 · pith_short_12: Q4O55C24BCSE · pith_short_16: Q4O55C24BCSEF4GI · pith_short_8: Q4O55C24

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/Q4O55C24BCSEF4GIPWKKCKJQJ3 \
  | 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: 871dde8b5c08a442f0c87d94a129304ef826e58895ef297b3796dfd96fbc9357

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a5005c2f79d5af4bbcdb726de32a0eefc0ca87aaf616763b679f1207e83537b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2016-03-22T02:40:00Z",
    "title_canon_sha256": "8e6db4b2ecdf0cf8b45d8c5faa90e7692981392c5122743fea8744aee1263cee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.06661",
    "kind": "arxiv",
    "version": 3
  }
}