Pith Number

pith:WQV25YXL

pith:2014:WQV25YXLALBIJ5PEYTLIE5MSV6

not attested not anchored not stored refs pending

Composition of inverse problems with a given logical structure

Julia Ninova, Vesselka Mihova

arxiv:1401.5909 v3 · 2014-01-23 · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WQV25YXLALBIJ5PEYTLIE5MSV6}

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	2026-05-18T02:33:07.751741Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b42baee2eb02c284f5e4c4d6827592af96c3061b45bc4b662a1ca570c384c4c1

Aliases

arxiv: 1401.5909 · arxiv_version: 1401.5909v3 · doi: 10.48550/arxiv.1401.5909 · pith_short_12: WQV25YXLALBI · pith_short_16: WQV25YXLALBIJ5PE · pith_short_8: WQV25YXL

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/WQV25YXLALBIJ5PEYTLIE5MSV6 \
  | 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: b42baee2eb02c284f5e4c4d6827592af96c3061b45bc4b662a1ca570c384c4c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7386cbb793c1f7721858f97e135e04cb06b1ccda8d0ab37f3980442244dccf5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2014-01-23T09:38:45Z",
    "title_canon_sha256": "ba59d04b5e8c01e3666b6abf79cb1fda722df584864db1de177e9bc0ab470f2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.5909",
    "kind": "arxiv",
    "version": 3
  }
}