Pith Number

pith:DHHIKKEG

pith:2019:DHHIKKEGD2QYCPFW2VIJ7Q46XE

not attested not anchored not stored refs pending

Approximate cloaking for time-dependent Maxwell equations via transformation optics

Hoai-Minh Nguyen, Loc Tran

arxiv:1901.04330 v1 · 2019-01-14 · 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{DHHIKKEGD2QYCPFW2VIJ7Q46XE}

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	2026-05-17T23:56:25.795725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19ce8528861ea1813cb6d5509fc39eb92a22a7bb3c6dd009e00b4e4727d8cc60

Aliases

arxiv: 1901.04330 · arxiv_version: 1901.04330v1 · doi: 10.48550/arxiv.1901.04330 · pith_short_12: DHHIKKEGD2QY · pith_short_16: DHHIKKEGD2QYCPFW · pith_short_8: DHHIKKEG

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/DHHIKKEGD2QYCPFW2VIJ7Q46XE \
  | 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: 19ce8528861ea1813cb6d5509fc39eb92a22a7bb3c6dd009e00b4e4727d8cc60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0248190fd2b2d49ee57df1b626560ef0ddc86b5a782475e4438c427228258a70",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-01-14T14:11:49Z",
    "title_canon_sha256": "aaf052217526c28d0005b8d2a615324c0613602e3249624109eca952dcfb96bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04330",
    "kind": "arxiv",
    "version": 1
  }
}