Pith Number

pith:LQURSBTW

pith:2018:LQURSBTWNU4XYXGUFATDMWJWVR

not attested not anchored not stored refs pending

Differentiability of the argmin function and a minimum principle for semiconcave subsolutions

David Witt Nystr\"om, Julius Ross

arxiv:1808.04402 v2 · 2018-08-13 · math.AP · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LQURSBTWNU4XYXGUFATDMWJWVR}

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	2026-05-17T23:44:43.110204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c291906766d397c5cd42826365936ac594b82e103dc36541609a691a280c078

Aliases

arxiv: 1808.04402 · arxiv_version: 1808.04402v2 · doi: 10.48550/arxiv.1808.04402 · pith_short_12: LQURSBTWNU4X · pith_short_16: LQURSBTWNU4XYXGU · pith_short_8: LQURSBTW

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/LQURSBTWNU4XYXGUFATDMWJWVR \
  | 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: 5c291906766d397c5cd42826365936ac594b82e103dc36541609a691a280c078

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ca9d0b2ed5ebbb17cc75611eefa9fa48a4d34eb194e9a1211bb0034324abe97",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-08-13T18:51:49Z",
    "title_canon_sha256": "369577f543ecf6af695512aa1ebefb3b9a6525253bc2176c6fd694e2b668a6d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.04402",
    "kind": "arxiv",
    "version": 2
  }
}