Pith Number

pith:JNDFH2PA

pith:1999:JNDFH2PAGAE3NWE7UI22QIRPAC

not attested not anchored not stored refs pending

Two Definitions of Superfluid Density

B.V. Svistunov, N.V. Prokof'ev

arxiv:cond-mat/9907203 v1 · 1999-07-14 · cond-mat

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JNDFH2PAGAE3NWE7UI22QIRPAC}

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	2026-05-18T01:07:04.480221Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b4653e9e03009b6d89fa235a8222f009d2caf3dffc58a11f790b35ecbfce765

Aliases

arxiv: cond-mat/9907203 · arxiv_version: cond-mat/9907203v1 · doi: 10.48550/arxiv.cond-mat/9907203 · pith_short_12: JNDFH2PAGAE3 · pith_short_16: JNDFH2PAGAE3NWE7 · pith_short_8: JNDFH2PA

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/JNDFH2PAGAE3NWE7UI22QIRPAC \
  | 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: 4b4653e9e03009b6d89fa235a8222f009d2caf3dffc58a11f790b35ecbfce765

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "315bddca970b768d7804c80c75e0ed24bc507c3e7b29875c05e103f52d041202",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat",
    "submitted_at": "1999-07-14T06:43:28Z",
    "title_canon_sha256": "d4825917168da8d32a56e2b728ba2d8e394e812b343cce481c28e51ae282faf1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9907203",
    "kind": "arxiv",
    "version": 1
  }
}