Pith Number

pith:FR6XYEWD

pith:2025:FR6XYEWDFLH4GXL6MYVVPBCVZN

not attested not anchored not stored refs pending

Physics-Informed Machine Learning for EDFA: Parameter Identification and Gain Estimation

Danshi Wang, Jiawei Dong, Jin Li, Min Zhang, Xiaotian Jiang, Yuchen Song

arxiv:2502.15144 v1 · 2025-02-21 · 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{FR6XYEWDFLH4GXL6MYVVPBCVZN}

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	2026-07-05T10:17:56.877431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c7d7c12c32acfc35d7e662b578455cb7fd3c5c5243e319a9cfe4031f4581310

Aliases

arxiv: 2502.15144 · arxiv_version: 2502.15144v1 · doi: 10.48550/arxiv.2502.15144 · pith_short_12: FR6XYEWDFLH4 · pith_short_16: FR6XYEWDFLH4GXL6 · pith_short_8: FR6XYEWD

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/FR6XYEWDFLH4GXL6MYVVPBCVZN \
  | 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: 2c7d7c12c32acfc35d7e662b578455cb7fd3c5c5243e319a9cfe4031f4581310

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a38fcb14683ba8e2be37ba62394ea31af1cdcc2c16dde31b4ee7173eea2049a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-02-21T01:54:46Z",
    "title_canon_sha256": "11468ba3dae535362f604e563de50bb49e0bc188b516b05fb29b39527fedf470"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.15144",
    "kind": "arxiv",
    "version": 1
  }
}