Pith Number

pith:6NU53QYE

pith:2019:6NU53QYEVKMEOA2ZMEHRJMKZCV

not attested not anchored not stored refs pending

Well-posedness for degenerate elliptic PDE arising in optimal learning strategies

J. Miguel Villas-Boas, Tim Laux

arxiv:1905.08281 v1 · 2019-05-20 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6NU53QYEVKMEOA2ZMEHRJMKZCV}

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	2026-05-17T23:45:43.763955Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f369ddc304aa98470359610f14b159154b323765435a073a72fcae967a81fa4b

Aliases

arxiv: 1905.08281 · arxiv_version: 1905.08281v1 · doi: 10.48550/arxiv.1905.08281 · pith_short_12: 6NU53QYEVKME · pith_short_16: 6NU53QYEVKMEOA2Z · pith_short_8: 6NU53QYE

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/6NU53QYEVKMEOA2ZMEHRJMKZCV \
  | 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: f369ddc304aa98470359610f14b159154b323765435a073a72fcae967a81fa4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "444b30e788840bb205aa64e0d78d388810446ce3d0242b6cdd3553b969da352b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-05-20T18:19:21Z",
    "title_canon_sha256": "17024797f0e38c2384f49365a9a552d78b43a5bce0cbb6f2841cdff18cfcf1d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.08281",
    "kind": "arxiv",
    "version": 1
  }
}