Pith Number

pith:PMNNKPJB

pith:2026:PMNNKPJBPMHY6KXW544UHUEO4L

not attested not anchored not stored refs pending

Learning fMRI activations dictionaries across individual geometries via optimal transport

Bertrand Thirion, R\'emi Flamary, Sonia Mazelet

arxiv:2605.20883 v1 · 2026-05-20 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PMNNKPJBPMHY6KXW544UHUEO4L}

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	2026-05-21T01:05:26.251898Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b1ad53d217b0f8f2af6ef3943d08ee2f992b76507b5c8179eb30b92ae2df1e9

Aliases

arxiv: 2605.20883 · arxiv_version: 2605.20883v1 · doi: 10.48550/arxiv.2605.20883 · pith_short_12: PMNNKPJBPMHY · pith_short_16: PMNNKPJBPMHY6KXW · pith_short_8: PMNNKPJB

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/PMNNKPJBPMHY6KXW544UHUEO4L \
  | 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: 7b1ad53d217b0f8f2af6ef3943d08ee2f992b76507b5c8179eb30b92ae2df1e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "628ec14650c548f8ce973ea7b93258e4c4e99b66d4a5d2fd52416bbc45a602e8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-20T08:22:38Z",
    "title_canon_sha256": "eb629a31df1d38faf3beca5d3be38bf64d0e40fd7a58203950b46b501331504e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20883",
    "kind": "arxiv",
    "version": 1
  }
}