Pith Number

pith:J2ID2W57

pith:2008:J2ID2W57CLIGN4CCBEB5JLJ6QE

not attested not anchored not stored refs pending

Extended Thomas-Fermi Density Functional for the Unitary Fermi Gas

Flavio Toigo, Luca Salasnich

arxiv:0809.1820 v3 · 2008-09-10 · cond-mat.other · cond-mat.quant-gas · cond-mat.supr-con

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J2ID2W57CLIGN4CCBEB5JLJ6QE}

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	2026-05-18T04:38:48.717461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e903d5bbf12d066f0420903d4ad3e813cc2f2dccf6a36347f7d5072856ef8b2

Aliases

arxiv: 0809.1820 · arxiv_version: 0809.1820v3 · doi: 10.48550/arxiv.0809.1820 · pith_short_12: J2ID2W57CLIG · pith_short_16: J2ID2W57CLIGN4CC · pith_short_8: J2ID2W57

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/J2ID2W57CLIGN4CCBEB5JLJ6QE \
  | 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: 4e903d5bbf12d066f0420903d4ad3e813cc2f2dccf6a36347f7d5072856ef8b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "173acee14ba167040b9ac70fdd8ff511eccf654da08f7fd8ab50ff3420e4fbf3",
    "cross_cats_sorted": [
      "cond-mat.quant-gas",
      "cond-mat.supr-con"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.other",
    "submitted_at": "2008-09-10T15:30:14Z",
    "title_canon_sha256": "16c9f9e23e45311a1b14d11c97f6c05590f3b59f0c42f031f8b2a8051fbe2d72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.1820",
    "kind": "arxiv",
    "version": 3
  }
}