Pith Number

pith:277UVRM5

pith:2014:277UVRM5EECJLFK4BGG56OL5PA

not attested not anchored not stored refs pending

An Inverse Problem of the Calculus of Variations on Arbitrary Time Scales

Agnieszka B. Malinowska, Delfim F. M. Torres, Monika Dryl

arxiv:1401.8232 v1 · 2014-01-31 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{277UVRM5EECJLFK4BGG56OL5PA}

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	2026-05-18T02:52:33.986355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7ff4ac59d210495955c098ddf397d782e43e254766aa4f1eaadc1f5ac2ae9f6

Aliases

arxiv: 1401.8232 · arxiv_version: 1401.8232v1 · doi: 10.48550/arxiv.1401.8232 · pith_short_12: 277UVRM5EECJ · pith_short_16: 277UVRM5EECJLFK4 · pith_short_8: 277UVRM5

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/277UVRM5EECJLFK4BGG56OL5PA \
  | 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: d7ff4ac59d210495955c098ddf397d782e43e254766aa4f1eaadc1f5ac2ae9f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b99189759aa758bb6d836edd6aea690e7151df781004dfb60e75304a7223ccf1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-01-31T17:10:20Z",
    "title_canon_sha256": "bf5dee692bbfc3f10c8bc3dfda278a30cbe4e804b3c297c6687596c8c4377c70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.8232",
    "kind": "arxiv",
    "version": 1
  }
}