Pith Number

pith:TEIFBD4T

pith:2018:TEIFBD4T4TF3ZJM3SNO6V4DPYM

not attested not anchored not stored refs pending

Morita Invariance of Intrinsic Characteristic Classes of Lie Algebroids

Pedro Frejlich

arxiv:1805.00542 v2 · 2018-05-01 · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TEIFBD4T4TF3ZJM3SNO6V4DPYM}

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	2026-05-18T00:00:39.601828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9910508f93e4cbbca59b935deaf06fc306929a72a334d5c29fc43a8872f29437

Aliases

arxiv: 1805.00542 · arxiv_version: 1805.00542v2 · doi: 10.48550/arxiv.1805.00542 · pith_short_12: TEIFBD4T4TF3 · pith_short_16: TEIFBD4T4TF3ZJM3 · pith_short_8: TEIFBD4T

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/TEIFBD4T4TF3ZJM3SNO6V4DPYM \
  | 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: 9910508f93e4cbbca59b935deaf06fc306929a72a334d5c29fc43a8872f29437

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a746173ff6c07befae4e917cd7ee9935c1bce998cf4f04d3d5db37b3a0448b3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2018-05-01T20:18:31Z",
    "title_canon_sha256": "b1903601742371327ce69547d909c603e56bf6c0a86e13ef16438ec20a6d388c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.00542",
    "kind": "arxiv",
    "version": 2
  }
}