Pith Number

pith:NQ2XDNL6

pith:2001:NQ2XDNL6HD2PJOL6DDABGWYJBS

not attested not anchored not stored refs pending

Magnetic excitations in two-leg spin 1/2 ladders: experiment and theory

A. Freimuth, A. Revcolevschi, B. Buechner, C. Knetter, G.S. Uhrig, K.P. Schmidt, M. Grueninger, M. Windt, T. Kopp, T. Nunner, U. Ammerahl

arxiv:cond-mat/0109524 v1 · 2001-09-27 · cond-mat.str-el

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NQ2XDNL6HD2PJOL6DDABGWYJBS}

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	2026-05-18T01:40:06.579227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c3571b57e38f4f4b97e18c0135b090c98029e02f2b5967313e098a1da2a1f4a

Aliases

arxiv: cond-mat/0109524 · arxiv_version: cond-mat/0109524v1 · doi: 10.48550/arxiv.cond-mat/0109524 · pith_short_12: NQ2XDNL6HD2P · pith_short_16: NQ2XDNL6HD2PJOL6 · pith_short_8: NQ2XDNL6

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/NQ2XDNL6HD2PJOL6DDABGWYJBS \
  | 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: 6c3571b57e38f4f4b97e18c0135b090c98029e02f2b5967313e098a1da2a1f4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73d3ea5ac9ae43fba3a1e9d24cab119e76cdde3aa9b134c9dd23236bafd8ca43",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "2001-09-27T12:41:37Z",
    "title_canon_sha256": "6f5f9ab2d5b8e3e04c8b9724164b6ef6f13da969ab76b08716d6013d7cdf666d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/0109524",
    "kind": "arxiv",
    "version": 1
  }
}