Pith Number

pith:A2IMBDA4

pith:2025:A2IMBDA4KI3EX2LN2EXAXEMYGJ

not attested not anchored not stored refs pending

Investigation of Tunable Structured Light Using Bilayer Parity-Time Symmetry Dammann Grating Metasurfaces

Huagang Li, Wei Liu, Xiang Cai, Yaohua Deng, Zhen Yao, Zhiwei Shi

arxiv:2502.18039 v1 · 2025-02-25 · 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{A2IMBDA4KI3EX2LN2EXAXEMYGJ}

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	2026-07-05T10:19:48.159701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0690c08c1c52364be96dd12e0b9198324833abe139cc3900d3bbf43800ec7637

Aliases

arxiv: 2502.18039 · arxiv_version: 2502.18039v1 · doi: 10.48550/arxiv.2502.18039 · pith_short_12: A2IMBDA4KI3E · pith_short_16: A2IMBDA4KI3EX2LN · pith_short_8: A2IMBDA4

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/A2IMBDA4KI3EX2LN2EXAXEMYGJ \
  | 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: 0690c08c1c52364be96dd12e0b9198324833abe139cc3900d3bbf43800ec7637

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b962b6a8c579d28b789023c0f6b7cc4115d3c3b66baef00d83ef92ee4d7ead8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-02-25T09:54:30Z",
    "title_canon_sha256": "198aaea76bc278c8644151be1cb80cb6367792cafbfa80f45bcf6bce937e7d77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.18039",
    "kind": "arxiv",
    "version": 1
  }
}