Pith Number

pith:PHYOYCLX

pith:2017:PHYOYCLXBDULNP7DIGP4WLPPMP

not attested not anchored not stored refs pending

How to Differentiate Collective Variables in Free Energy Codes: Computer-Algebra Code Generation and Automatic Differentiation

Toni Giorgino

arxiv:1709.06780 v2 · 2017-09-20 · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PHYOYCLXBDULNP7DIGP4WLPPMP}

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	2026-05-18T00:22:28.319872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79f0ec097708e8b6bfe3419fcb2def63f9107b2dc1153886bbb3f45c522c9ed0

Aliases

arxiv: 1709.06780 · arxiv_version: 1709.06780v2 · doi: 10.48550/arxiv.1709.06780 · pith_short_12: PHYOYCLXBDUL · pith_short_16: PHYOYCLXBDULNP7D · pith_short_8: PHYOYCLX

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/PHYOYCLXBDULNP7DIGP4WLPPMP \
  | 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: 79f0ec097708e8b6bfe3419fcb2def63f9107b2dc1153886bbb3f45c522c9ed0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bc9f9c41c5b19073a15e0aa85c6458d3dadd25d9277337d5384c3e2cac7c3d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2017-09-20T09:22:21Z",
    "title_canon_sha256": "5ec430af3c333fa9f2ffecf8ca7e43876b776a085faba56921208f35a248bb95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.06780",
    "kind": "arxiv",
    "version": 2
  }
}