Pith Number

pith:YMBHUPBD

pith:2013:YMBHUPBDPDC6FEHT7SDLERIGBU

not attested not anchored not stored refs pending

Second sound and the superfluid fraction in a resonantly interacting Fermi gas

Leonid A. Sidorenkov, Lev Pitaevskii, Meng Khoon Tey, Rudolf Grimm, Sandro Stringari, Yan-Hua Hou

arxiv:1302.2871 v1 · 2013-02-12 · cond-mat.quant-gas · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YMBHUPBDPDC6FEHT7SDLERIGBU}

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	2026-05-18T03:33:50.544991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3027a3c2378c5e290f3fc86b245060d0eb188e88d3bbdccdb7db93bfe30202c

Aliases

arxiv: 1302.2871 · arxiv_version: 1302.2871v1 · doi: 10.48550/arxiv.1302.2871 · pith_short_12: YMBHUPBDPDC6 · pith_short_16: YMBHUPBDPDC6FEHT · pith_short_8: YMBHUPBD

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/YMBHUPBDPDC6FEHT7SDLERIGBU \
  | 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: c3027a3c2378c5e290f3fc86b245060d0eb188e88d3bbdccdb7db93bfe30202c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b47907fc5712ca99b916a9d203d86e73247a0245281f8a442b16c94ac127d064",
    "cross_cats_sorted": [
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.quant-gas",
    "submitted_at": "2013-02-12T17:41:54Z",
    "title_canon_sha256": "e6ecfafd42201926bf080703023341cb5f5865c6841120c0b011fe7340200640"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2871",
    "kind": "arxiv",
    "version": 1
  }
}