Pith Number

pith:PUAMVGNQ

pith:2021:PUAMVGNQUZGUIFK3NNHLRAHACZ

not attested not anchored not stored refs pending

Bilateral backstepping control of coupled linear parabolic PDEs with spatially varying coefficients

Joachim Deutscher, Simon Kerschbaum

arxiv:2104.04854 v1 · 2021-04-10 · 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{PUAMVGNQUZGUIFK3NNHLRAHACZ}

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	2026-07-05T02:30:48.375841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d00ca99b0a64d44155b6b4eb880e016427931923e9c9c4c366d6367c99fd146

Aliases

arxiv: 2104.04854 · arxiv_version: 2104.04854v1 · doi: 10.48550/arxiv.2104.04854 · pith_short_12: PUAMVGNQUZGU · pith_short_16: PUAMVGNQUZGUIFK3 · pith_short_8: PUAMVGNQ

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/PUAMVGNQUZGUIFK3NNHLRAHACZ \
  | 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: 7d00ca99b0a64d44155b6b4eb880e016427931923e9c9c4c366d6367c99fd146

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f0cedd3969cf847ca972dd3b1f23550621721a1db7fc85a351e4cb557ebd190",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-04-10T20:17:52Z",
    "title_canon_sha256": "2f03fe685f88fc1f823027e1ec76ff18ec4c82456b030a6e7e0d05172d2c7ae1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.04854",
    "kind": "arxiv",
    "version": 1
  }
}