Pith Number

pith:QIULSZS3

pith:2018:QIULSZS3NDNXWHLYCS64AJSINY

not attested not anchored not stored refs pending

An upper limit to the orbital angular momentum of a vortex-carrying ultrashort pulse

Miguel A. Porras

arxiv:1812.11147 v1 · 2018-12-28 · 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{QIULSZS3NDNXWHLYCS64AJSINY}

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	2026-05-17T23:49:39.834207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8228b9665b68db7b1d7814bdc026486e2b0ef57a18cf0f9dc115658f115352ca

Aliases

arxiv: 1812.11147 · arxiv_version: 1812.11147v1 · doi: 10.48550/arxiv.1812.11147 · pith_short_12: QIULSZS3NDNX · pith_short_16: QIULSZS3NDNXWHLY · pith_short_8: QIULSZS3

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/QIULSZS3NDNXWHLYCS64AJSINY \
  | 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: 8228b9665b68db7b1d7814bdc026486e2b0ef57a18cf0f9dc115658f115352ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9978bba1bc203c65422d546fbfe102583a48629511b87cd7a4ebc74de4c1bb4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-12-28T18:21:47Z",
    "title_canon_sha256": "bc0b3dd50cf244c3301712715eb343dc9716f1c56932ab46383dc8b7fa5adb6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.11147",
    "kind": "arxiv",
    "version": 1
  }
}