Pith Number

pith:LR4GB77A

pith:2019:LR4GB77AVEJPBSQE2EEKB7XZV4

not attested not anchored not stored refs pending

Theoretical energy levels of $1sns$ and $1snp$ states of helium-like ions

A. Surzhykov, V. A. Yerokhin

arxiv:1908.08940 v1 · 2019-08-16 · physics.atom-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{LR4GB77AVEJPBSQE2EEKB7XZV4}

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	2026-07-05T00:00:28.006600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c7860ffe0a912f0ca04d108a0fef9af34cc59662387f63096e04b1a24ffc3a7

Aliases

arxiv: 1908.08940 · arxiv_version: 1908.08940v1 · doi: 10.48550/arxiv.1908.08940 · pith_short_12: LR4GB77AVEJP · pith_short_16: LR4GB77AVEJPBSQE · pith_short_8: LR4GB77A

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/LR4GB77AVEJPBSQE2EEKB7XZV4 \
  | 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: 5c7860ffe0a912f0ca04d108a0fef9af34cc59662387f63096e04b1a24ffc3a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc038e2e0135a4ca8acdadaa93efc3bf6b9e79b8b9b17b407a60f94dc8adf137",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2019-08-16T14:36:37Z",
    "title_canon_sha256": "6c4f07d9927e8a15009b44dd0bb770a77f0530a0811e089413b2969165215c62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08940",
    "kind": "arxiv",
    "version": 1
  }
}