Pith Number

pith:UPBMECEK

pith:1992:UPBMECEK677IMVVEVKNEVU3DPB

not attested not anchored not stored refs pending

Algebraic Structures and Differential Geometry in 2D String Theory

Barton Zwiebach, Edward Witten

arxiv:hep-th/9201056 v1 · 1992-01-28 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UPBMECEK677IMVVEVKNEVU3DPB}

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	2026-07-04T17:25:46.402257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3c2c2088af7fe8656a4aa9a4ad363785823308426fb6cb7c21c2ca5056aa846

Aliases

arxiv: hep-th/9201056 · arxiv_version: hep-th/9201056v1 · doi: 10.48550/arxiv.hep-th/9201056 · pith_short_12: UPBMECEK677I · pith_short_16: UPBMECEK677IMVVE · pith_short_8: UPBMECEK

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/UPBMECEK677IMVVEVKNEVU3DPB \
  | 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: a3c2c2088af7fe8656a4aa9a4ad363785823308426fb6cb7c21c2ca5056aa846

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be4cc3f8fc24ff9e9c3650ff62bb1a43e1cd18daf4f6afb086f2e3d7fe31603f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1992-01-28T02:30:00Z",
    "title_canon_sha256": "553ed6b0ec0fb700e39082f4e0ccf4bfc1a7d2899e2cb1ea5cd5b339d344f493"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9201056",
    "kind": "arxiv",
    "version": 1
  }
}