Pith Number

pith:BA4DPS6R

pith:2025:BA4DPS6RE2M2DIM2G2ZW6HLIX2

not attested not anchored not stored refs pending

Efficiency enhancement in regenerative amplifier free-electron lasers using a tapered undulator

Henry Freund, Patrick O'Shea, Peter van der Slot

arxiv:2501.01911 v1 · 2025-01-03 · physics.optics · physics.acc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BA4DPS6RE2M2DIM2G2ZW6HLIX2}

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	2026-07-05T09:56:43.240555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

083837cbd12699a1a19a36b36f1d68be8c55240bbf436cf07c77dd4486cafbce

Aliases

arxiv: 2501.01911 · arxiv_version: 2501.01911v1 · doi: 10.48550/arxiv.2501.01911 · pith_short_12: BA4DPS6RE2M2 · pith_short_16: BA4DPS6RE2M2DIM2 · pith_short_8: BA4DPS6R

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/BA4DPS6RE2M2DIM2G2ZW6HLIX2 \
  | 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: 083837cbd12699a1a19a36b36f1d68be8c55240bbf436cf07c77dd4486cafbce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d9c9693ab59c015d3aab2fe92e476d529977e69b70439b6590f550b81e10e4b",
    "cross_cats_sorted": [
      "physics.acc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-01-03T17:29:19Z",
    "title_canon_sha256": "2b2aff74704301d6c703b377cff3eab9e407d5506159eb9debbc10820a5e7e7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.01911",
    "kind": "arxiv",
    "version": 1
  }
}