Pith Number

pith:OOSAEF5W

pith:1998:OOSAEF5WOJ3MLF6Q6AAPU5NN2C

not attested not anchored not stored refs pending

A Mesoscopic Approach to the ``Negative'' Viscosity Effect in Ferrofluids

A. Perez Madrid, J.M.G. Vilar, J.M. Rubi, T. Alarcon

arxiv:cond-mat/9803305 v2 · 1998-03-25 · 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{OOSAEF5WOJ3MLF6Q6AAPU5NN2C}

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	2026-05-18T01:05:38.886430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73a40217b67276c597d0f000fa75add0bf7116fd2fa82d79a501643fffaaa02d

Aliases

arxiv: cond-mat/9803305 · arxiv_version: cond-mat/9803305v2 · doi: 10.48550/arxiv.cond-mat/9803305 · pith_short_12: OOSAEF5WOJ3M · pith_short_16: OOSAEF5WOJ3MLF6Q · pith_short_8: OOSAEF5W

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/OOSAEF5WOJ3MLF6Q6AAPU5NN2C \
  | 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: 73a40217b67276c597d0f000fa75add0bf7116fd2fa82d79a501643fffaaa02d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9abf570629afa71617197053272296afb93e4b6371a21ca4504b1e471a93c1cf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat",
    "submitted_at": "1998-03-25T14:58:58Z",
    "title_canon_sha256": "318f7b01265f647b5a549074d7dde77089895eb4e523e4edfd984a22a3f8136e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9803305",
    "kind": "arxiv",
    "version": 2
  }
}